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Vulnerability from cleanstart
Published
2026-06-08 14:52
Modified
2026-06-02 10:23
Summary
Security fixes for CVE-2026-33811, CVE-2026-33814, CVE-2026-39817, CVE-2026-39819, CVE-2026-39820, CVE-2026-39823, CVE-2026-39825, CVE-2026-39826, CVE-2026-39836, CVE-2026-42499, CVE-2026-42501, CVE-2026-44740, CVE-2026-44973, CVE-2026-45022, CVE-2026-45570, CVE-2026-45571, ghsa-389r-gv7p-r3rp, ghsa-3xc5-wrhm-f963, ghsa-m3xc-h892-ggx6, ghsa-qw64-3x98-g7q2 applied in versions: 1.2.2-r0, 1.2.2-r1
Details
Multiple security vulnerabilities affect the apko package. These issues are resolved in later releases. See references for individual vulnerability details.
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "apko"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.2-r1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the apko package. These issues are resolved in later releases. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-OS93204",
"modified": "2026-06-02T10:23:02Z",
"published": "2026-06-08T14:52:28.179757Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-OS93204.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-33811"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-33814"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39817"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39819"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39820"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39823"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39825"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39826"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39836"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42499"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42501"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-44740"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-44973"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-45022"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-45570"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-45571"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-389r-gv7p-r3rp"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-3xc5-wrhm-f963"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-m3xc-h892-ggx6"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-qw64-3x98-g7q2"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33811"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33814"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39817"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39819"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39820"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39823"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39825"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39826"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39836"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42499"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42501"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44740"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44973"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45022"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45570"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45571"
}
],
"related": [],
"schema_version": "1.7.3",
"summary": "Security fixes for CVE-2026-33811, CVE-2026-33814, CVE-2026-39817, CVE-2026-39819, CVE-2026-39820, CVE-2026-39823, CVE-2026-39825, CVE-2026-39826, CVE-2026-39836, CVE-2026-42499, CVE-2026-42501, CVE-2026-44740, CVE-2026-44973, CVE-2026-45022, CVE-2026-45570, CVE-2026-45571, ghsa-389r-gv7p-r3rp, ghsa-3xc5-wrhm-f963, ghsa-m3xc-h892-ggx6, ghsa-qw64-3x98-g7q2 applied in versions: 1.2.2-r0, 1.2.2-r1",
"upstream": [
"CVE-2026-33811",
"CVE-2026-33814",
"CVE-2026-39817",
"CVE-2026-39819",
"CVE-2026-39820",
"CVE-2026-39823",
"CVE-2026-39825",
"CVE-2026-39826",
"CVE-2026-39836",
"CVE-2026-42499",
"CVE-2026-42501",
"CVE-2026-44740",
"CVE-2026-44973",
"CVE-2026-45022",
"CVE-2026-45570",
"CVE-2026-45571",
"ghsa-389r-gv7p-r3rp",
"ghsa-3xc5-wrhm-f963",
"ghsa-m3xc-h892-ggx6",
"ghsa-qw64-3x98-g7q2"
]
}
GHSA-QW64-3X98-G7Q2
Vulnerability from github – Published: 2026-05-14 18:25 – Updated: 2026-06-09 10:26
VLAI?
Summary
go-billy has path traversal vulnerabilities
Details
Impact
Multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories.
While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations.
The osfs.ChrootOS implementation is notably affected by this vulnerability and is now deprecated in v5, removed at v6. Users are recommended to move on to osfs.BoundOS instead: osfs.New(path, WithBoundOS()).
Users requiring stronger security boundary enforcement are recommended to upgrade to v6, where the osfs implementation are backed by the traversal-resistant primitive os.Root.
Patches
Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.
Credits
Thanks to @faran66 and @vnykmshr for finding and separately reporting this issue privately to the go-git project. 🙇
Severity ?
8.1 (High)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-billy/v5"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.9.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-billy/v6"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0-alpha.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-44973"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-14T18:25:38Z",
"nvd_published_at": "2026-05-28T22:16:59Z",
"severity": "HIGH"
},
"details": "### Impact\nMultiple path traversal issues exist across different components of `go-billy`. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using `..`) to escape intended base directories.\n\nWhile go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on `go-billy` for some level of isolation may inadvertently expose access to unintended filesystem locations.\n\nThe `osfs.ChrootOS` implementation is notably affected by this vulnerability and is now deprecated in `v5`, removed at `v6`. Users are recommended to move on to `osfs.BoundOS` instead: `osfs.New(path, WithBoundOS())`.\n\nUsers requiring stronger security boundary enforcement are recommended to upgrade to `v6`, where the `osfs` implementation are backed by the [traversal-resistant](https://go.dev/blog/osroot) primitive [os.Root](https://pkg.go.dev/os#Root).\n\n### Patches\nUsers should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to `v5` are likely to be affected, users are recommended to upgrade to a supported `go-billy` version.\n\n### Credits\nThanks to @faran66 and @vnykmshr for finding and separately reporting this issue privately to the go-git project. \ud83d\ude47",
"id": "GHSA-qw64-3x98-g7q2",
"modified": "2026-06-09T10:26:27Z",
"published": "2026-05-14T18:25:38Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/go-git/go-billy/security/advisories/GHSA-qw64-3x98-g7q2"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44973"
},
{
"type": "PACKAGE",
"url": "https://github.com/go-git/go-billy"
},
{
"type": "WEB",
"url": "https://github.com/go-git/go-billy/releases/tag/v5.9.0"
},
{
"type": "WEB",
"url": "https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "go-billy has path traversal vulnerabilities"
}
GHSA-M3XC-H892-GGX6
Vulnerability from github – Published: 2026-05-13 15:29 – Updated: 2026-06-09 10:50
VLAI?
Summary
go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion
Details
Impact
Multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption.
These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures.
Patches
Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.
Credits
Thanks to @faran66 for finding and reporting this issue privately to the go-git project. 🙇
Severity ?
6.5 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-billy/v5"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.9.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-billy/v6"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0-alpha.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-44740"
],
"database_specific": {
"cwe_ids": [
"CWE-674",
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-13T15:29:47Z",
"nvd_published_at": "2026-06-01T17:17:08Z",
"severity": "MODERATE"
},
"details": "### Impact\nMultiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption.\n\nThese issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures.\n\n### Patches\nUsers should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to `v5` are likely to be affected, users are recommended to upgrade to a supported `go-billy` version.\n\n### Credits\nThanks to @faran66 for finding and reporting this issue privately to the go-git project. \ud83d\ude47",
"id": "GHSA-m3xc-h892-ggx6",
"modified": "2026-06-09T10:50:07Z",
"published": "2026-05-13T15:29:47Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/go-git/go-billy/security/advisories/GHSA-m3xc-h892-ggx6"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44740"
},
{
"type": "PACKAGE",
"url": "https://github.com/go-git/go-billy"
},
{
"type": "WEB",
"url": "https://github.com/go-git/go-billy/releases/tag/v5.9.0"
},
{
"type": "WEB",
"url": "https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion"
}
GHSA-389R-GV7P-R3RP
Vulnerability from github – Published: 2026-05-11 14:48 – Updated: 2026-06-08 23:42
VLAI?
Summary
go-git's improper parsing of specially crafted objects may lead to inconsistent interpretation compared to upstream Git
Details
Impact
go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object.
Additionally, go-git’s commit signing and verification logic operates over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository.
This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed.
Patches
Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-git version.
Credit
Thanks to @bugbunny-research (https://bugbunny.ai/) for reporting this to sigstore/gitsign, and to @wlynch, @patzielinski and @adityasaky for coordinating the disclosure with the go-git project. :bow: :1st_place_medal:
Thanks to @wayphinder for reporting this to the go-git project. :bow:
Severity ?
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.0.0-alpha.2"
},
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-git/v6"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0-alpha.1"
},
{
"fixed": "6.0.0-alpha.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-git/v5"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.19.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-45022"
],
"database_specific": {
"cwe_ids": [
"CWE-180",
"CWE-345"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-11T14:48:12Z",
"nvd_published_at": "2026-05-27T15:16:29Z",
"severity": "HIGH"
},
"details": "### Impact\n`go-git` may parse malformed Git objects in a way that differs from upstream Git. When `commit` or `tag` objects contain ambiguous or malformed headers, `go-git`\u2019s decoded representation may expose values differently from how Git itself would interpret or reject the same object.\n\nAdditionally, `go-git`\u2019s commit signing and verification logic operates over commit data reconstructed from `go-git`\u2019s parsed representation rather than the original raw object bytes. As a result, `go-git` may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository.\n\nThis can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed.\n\n### Patches\nUsers should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.\n\n### Credit\n\nThanks to @bugbunny-research (https://bugbunny.ai/) for reporting this to `sigstore/gitsign`, and to @wlynch, @patzielinski and @adityasaky for coordinating the disclosure with the `go-git` project. :bow: :1st_place_medal: \n\nThanks to @wayphinder for reporting this to the `go-git` project. :bow:",
"id": "GHSA-389r-gv7p-r3rp",
"modified": "2026-06-08T23:42:41Z",
"published": "2026-05-11T14:48:12Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/go-git/go-git/security/advisories/GHSA-389r-gv7p-r3rp"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45022"
},
{
"type": "PACKAGE",
"url": "https://github.com/go-git/go-git"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
"type": "CVSS_V4"
}
],
"summary": "go-git\u0027s improper parsing of specially crafted objects may lead to inconsistent interpretation compared to upstream Git"
}
GHSA-3XC5-WRHM-F963
Vulnerability from github – Published: 2026-04-17 22:31 – Updated: 2026-05-12 13:32
VLAI?
Summary
go-git: Credential leak via cross-host redirect in smart HTTP transport
Details
Impact
go-git may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.
If a remote repository responds to the initial /info/refs request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.
An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.
Clients using go-git exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue. The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.
Patches
Users should upgrade to v5.18.0, or v6.0.0-alpha.2, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-git version.
The patched versions add support for configuring followRedirects. In line with upstream behaviour, the default is now initial, while users can opt into FollowRedirects or NoFollowRedirects programmatically.
Credit
Thanks to the 3 separate reports from @celinke97, @N0zoM1z0 and @AyushParkara. Thanks for finding and reporting this issue privately to the go-git project. :bow:
Severity ?
4.7 (Medium)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 5.17.2"
},
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-git/v5"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.18.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.0.0-alpha.1"
},
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-git/v6"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0-alpha.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-41506"
],
"database_specific": {
"cwe_ids": [
"CWE-522"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-17T22:31:35Z",
"nvd_published_at": "2026-05-08T14:16:33Z",
"severity": "MODERATE"
},
"details": "### Impact\n`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.\n\nIf a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.\n\nAn attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim\u2019s repositories or other resources, depending on the scope of the credential.\n\n**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.\n\n### Patches\nUsers should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.\n\nThe patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.\n\n### Credit\nThanks to the 3 separate reports from @celinke97, @N0zoM1z0 and @AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. :bow:",
"id": "GHSA-3xc5-wrhm-f963",
"modified": "2026-05-12T13:32:21Z",
"published": "2026-04-17T22:31:35Z",
"references": [
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"type": "WEB",
"url": "https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963"
},
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"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41506"
},
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}
],
"summary": "go-git: Credential leak via cross-host redirect in smart HTTP transport"
}
CVE-2026-39817 (GCVE-0-2026-39817)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:29
VLAI?
EPSS
Title
Invoking "go tool pack" does not sanitize output paths in cmd/go
Summary
The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the "pack" subcommand can write files to arbitrary locations on the filesystem.
Severity ?
5.9 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go toolchain | cmd/go |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Harshit Gupta (Mr HAX)
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CVE-2026-39820 (GCVE-0-2026-39820)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-03 12:05
VLAI?
EPSS
Title
Quadratic string concatentation in consumeComment in net/mail
Summary
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.
Severity ?
7.5 (High)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | net/mail |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
thatnealpatel
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CVE-2026-39836 (GCVE-0-2026-39836)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI?
EPSS
Title
Panic in Dial and LookupPort when handling NUL byte on Windows in net
Summary
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Severity ?
7.5 (High)
CWE
- CWE-248 - Uncaught Exception
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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CVE-2026-39826 (GCVE-0-2026-39826)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05
VLAI?
EPSS
Title
Escaper bypass leads to XSS in html/template
Summary
If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.
Severity ?
6.1 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Mundur (https://github.com/M0nd0R)
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CVE-2026-33811 (GCVE-0-2026-33811)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-03 12:04
VLAI?
EPSS
Title
Crash when handling long CNAME response in net
Summary
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Severity ?
7.5 (High)
CWE
- CWE-415 - Double Free
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
hamayanhamayan
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CVE-2026-45570 (GCVE-0-2026-45570)
Vulnerability from cvelistv5 – Published: 2026-05-27 14:59 – Updated: 2026-05-28 15:12
VLAI?
EPSS
Title
go-git: Improper single-quote escaping in go-git SSH transport
Summary
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.1 and 6.0.0-alpha.4, go-git's SSH transport constructs the remote exec command by wrapping the repository path in single quotes without escaping single quotes embedded inside the path. A repository path containing a single quote can therefore break out of the quoted region in the exec command and be appended as additional shell tokens. This vulnerability is fixed in 5.19.1 and 6.0.0-alpha.4.
Severity ?
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
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CVE-2026-39819 (GCVE-0-2026-39819)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:29
VLAI?
EPSS
Title
Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go
Summary
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.
Severity ?
5.3 (Medium)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go toolchain | cmd/go |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Harshit Gupta (Mr HAX)
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CVE-2026-33814 (GCVE-0-2026-33814)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-02 12:05
VLAI?
EPSS
Title
Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net
Summary
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
Severity ?
7.5 (High)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| golang.org/x/net | golang.org/x/net/http2 |
Affected:
0 , < 0.53.0
(semver)
|
|||||||
|
|||||||||
Credits
Marwan Atia (marwansamir688@gmail.com)
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CVE-2026-45571 (GCVE-0-2026-45571)
Vulnerability from cvelistv5 – Published: 2026-05-27 14:57 – Updated: 2026-05-27 16:03
VLAI?
EPSS
Title
go-git: Crafted repositories may modify main and submodule .git directories
Summary
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.1 and 6.0.0-alpha.4, a path validation issue in go-git could allow crafted repository data to affect files outside the intended checkout target, including the repository's .git directory. These validations were introduced in upstream Git years ago, so the vulnerability arose from go-git drifting from those checks. This vulnerability is fixed in 5.19.1 and 6.0.0-alpha.4.
Severity ?
5.4 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
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CVE-2026-44740 (GCVE-0-2026-44740)
Vulnerability from cvelistv5 – Published: 2026-06-01 16:04 – Updated: 2026-06-01 18:14
VLAI?
EPSS
Title
go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion
Summary
Billy is an interface filesystem abstraction for Go. Prior to versions 5.9.0 and 6.0.0-alpha.1, multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption. These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures. This issue has been patched in versions 5.9.0 and 6.0.0-alpha.1.
Severity ?
6.5 (Medium)
CWE
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
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CVE-2026-42499 (GCVE-0-2026-42499)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-03 12:05
VLAI?
EPSS
Title
Quadratic string concatenation in consumePhrase in net/mail
Summary
Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.
Severity ?
7.5 (High)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | net/mail |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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CVE-2026-39825 (GCVE-0-2026-39825)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI?
EPSS
Title
ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil
Summary
ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.
Severity ?
5.3 (Medium)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | net/http/httputil |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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CVE-2026-44973 (GCVE-0-2026-44973)
Vulnerability from cvelistv5 – Published: 2026-05-28 21:26 – Updated: 2026-06-01 18:41
VLAI?
EPSS
Title
Billy: Path traversal vulnerabilities
Summary
Billy is an interface filesystem abstraction for Go. Prior to 5.9.0, multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories. While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations. This vulnerability is fixed in 5.9.0.
Severity ?
8.1 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
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CVE-2026-45022 (GCVE-0-2026-45022)
Vulnerability from cvelistv5 – Published: 2026-05-27 14:54 – Updated: 2026-05-27 15:43
VLAI?
EPSS
Title
go-git: Improper parsing of specially crafted objects may lead to inconsistent interpretation compared to upstream Git
Summary
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object. Additionally, go-git’s commit signing and verification logic operates over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository. This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed. This vulnerability is fixed in 5.19.0 and 6.0.0-alpha.3.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
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CVE-2026-42501 (GCVE-0-2026-42501)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 15:48
VLAI?
EPSS
Title
Malicious module proxy can bypass checksum database in cmd/go
Summary
A malicious module proxy can exploit a flaw in the go command's validation of module checksums to bypass checksum database validation. This vulnerability affects any user using an untrusted module proxy (GOMODPROXY) or checksum database (GOSUMDB). A malicious module proxy can serve altered versions of the Go toolchain. When selecting a different version of the Go toolchain than the currently installed toolchain (due to the GOTOOLCHAIN environment variable, or a go.work or go.mod with a toolchain line), the go command will download and execute a toolchain provided by the module proxy. A malicious module proxy can bypass checksum database validation for this downloaded toolchain. Since this vulnerability affects the security of toolchain downloads, setting GOTOOLCHAIN to a fixed version is not sufficient. You must upgrade your base Go toolchain. The go tool always validates the hash of a toolchain before executing it, so fixed versions will refuse to execute any cached, altered versions of the toolchain. The go tool trusts go.sum files to contain accurate hashes of the current module's dependencies. A malicious proxy exploiting this vulnerability to serve an altered module will have caused an incorrect hash to be recorded in the go.sum. Users who have configured a non-trusted GOPROXY can determine if they have been affected by running "rm go.sum ; go mod tidy ; go mod verify", which will revalidate all dependencies of the current module. The specific flaw in more detail: The go command consults the checksum database to validate downloaded modules, when a module is not listed in the go.sum file. It verifies that the module hash reported by the checksum database matches the hash of the downloaded module. If, however, the checksum database returns a successful response that contains no entry for the module, the go command incorrectly permitted validation to succeed. A module proxy may mirror or proxy the checksum database, in which case the go command will not connect to the checksum database directly. Checksums reported by the checksum database are cryptographically signed, so a malicious proxy cannot alter the reported checksum for a module. However, a proxy which returns an empty checksum response, or a checksum response for an unrelated module, could cause the go command to proceed as if a downloaded module has been validated.
Severity ?
7.5 (High)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go toolchain | cmd/go |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Mundur (https://github.com/M0nd0R)
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"value": "A malicious module proxy can exploit a flaw in the go command\u0027s validation of module checksums to bypass checksum database validation. This vulnerability affects any user using an untrusted module proxy (GOMODPROXY) or checksum database (GOSUMDB). A malicious module proxy can serve altered versions of the Go toolchain. When selecting a different version of the Go toolchain than the currently installed toolchain (due to the GOTOOLCHAIN environment variable, or a go.work or go.mod with a toolchain line), the go command will download and execute a toolchain provided by the module proxy. A malicious module proxy can bypass checksum database validation for this downloaded toolchain. Since this vulnerability affects the security of toolchain downloads, setting GOTOOLCHAIN to a fixed version is not sufficient. You must upgrade your base Go toolchain. The go tool always validates the hash of a toolchain before executing it, so fixed versions will refuse to execute any cached, altered versions of the toolchain. The go tool trusts go.sum files to contain accurate hashes of the current module\u0027s dependencies. A malicious proxy exploiting this vulnerability to serve an altered module will have caused an incorrect hash to be recorded in the go.sum. Users who have configured a non-trusted GOPROXY can determine if they have been affected by running \"rm go.sum ; go mod tidy ; go mod verify\", which will revalidate all dependencies of the current module. The specific flaw in more detail: The go command consults the checksum database to validate downloaded modules, when a module is not listed in the go.sum file. It verifies that the module hash reported by the checksum database matches the hash of the downloaded module. If, however, the checksum database returns a successful response that contains no entry for the module, the go command incorrectly permitted validation to succeed. A module proxy may mirror or proxy the checksum database, in which case the go command will not connect to the checksum database directly. Checksums reported by the checksum database are cryptographically signed, so a malicious proxy cannot alter the reported checksum for a module. However, a proxy which returns an empty checksum response, or a checksum response for an unrelated module, could cause the go command to proceed as if a downloaded module has been validated."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-347: Improper Verification of Cryptographic Signature",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-07T19:41:19.691Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/775321"
},
{
"url": "https://go.dev/issue/79070"
},
{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4984"
}
],
"title": "Malicious module proxy can bypass checksum database in cmd/go"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-42501",
"datePublished": "2026-05-07T19:41:19.691Z",
"dateReserved": "2026-04-28T00:21:12.791Z",
"dateUpdated": "2026-05-08T15:48:47.404Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-39823 (GCVE-0-2026-39823)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05
VLAI?
EPSS
Title
Bypass of meta content URL escaping causes XSS in html/template
Summary
CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.
Severity ?
6.1 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Samy Ghannad
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-39823",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-08T14:05:34.310805Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-08T14:05:55.152Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "html/template",
"product": "html/template",
"programRoutines": [
{
"name": "tMetaContent"
},
{
"name": "Template.Execute"
},
{
"name": "Template.ExecuteTemplate"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.25.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.26.3",
"status": "affected",
"version": "1.26.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Samy Ghannad"
}
],
"descriptions": [
{
"lang": "en",
"value": "CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a \u003cmeta\u003e tag\u0027s \u003ccontent\u003e attribute. If the URL content were to insert ASCII whitespaces around the \u0027=\u0027 rune inside of the \u003ccontent\u003e attribute, the escaper would fail to similarly escape it, leading to XSS."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-07T19:41:19.524Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/78913"
},
{
"url": "https://go.dev/cl/769920"
},
{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4982"
}
],
"title": "Bypass of meta content URL escaping causes XSS in html/template"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-39823",
"datePublished": "2026-05-07T19:41:19.524Z",
"dateReserved": "2026-04-07T18:13:03.527Z",
"dateUpdated": "2026-05-08T14:05:55.152Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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