Vulnerability-Lookup

GHSA-C329-4CX6-V738

Vulnerability from github – Published: 2026-05-15 21:31 – Updated: 2026-05-15 21:31

Details

CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.

Severity ?

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47958"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-15T19:16:54Z",
    "severity": "MODERATE"
  },
  "details": "CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.",
  "id": "GHSA-c329-4cx6-v738",
  "modified": "2026-05-15T21:31:32Z",
  "published": "2026-05-15T21:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47958"
    },
    {
      "type": "WEB",
      "url": "https://github.com/CouchCMS/CouchCMS"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/49675"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/couchcms-server-side-request-forgery-via-svg-upload"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2021-47958 (GCVE-0-2021-47958)

Vulnerability from cvelistv5 – Published: 2026-05-15 18:36 – Updated: 2026-05-15 22:56

Title

CouchCMS 2.2.1 Server-Side Request Forgery via SVG upload

Summary

Severity ?

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/49675	exploit
	https://github.com/CouchCMS/CouchCMS	product
	https://www.vulncheck.com/advisories/couchcms-ser…	third-party-advisory

Impacted products

	Vendor	Product	Version
	CouchCMS	CouchCMS	Affected: 2.2.1

Credits

xxcdd

Show details on NVD website

JSON

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                "timestamp": "2026-05-15T22:12:37.787017Z",
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-C329-4CX6-V738

CVE-2021-47958 (GCVE-0-2021-47958)

Tags

Sightings

Nomenclature