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GHSA-JH67-HWQW-M5R7
Vulnerability from github – Published: 2026-05-19 15:16 – Updated: 2026-05-19 15:16
VLAI?
Summary
rok Python ProxyShare can be used as an SSRF proxy through absolute URL paths
Details
Summary
Alice exposes a Python SDK ProxyShare with a fixed target URL. Bob sends a request to the share with an absolute URL in the path. The Flask handler passes that path to urllib.parse.urljoin, which replaces Alice's configured target host with Bob's host and returns the server-side response to Bob.
Details
The Python SDK proxy route accepts every path under the share:
@app.route('/', defaults={'path': ''}, methods=['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'])
@app.route('/<path:path>', methods=['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'])
def proxy(path):
It constructs the outbound URL with urljoin and then sends the request:
url = urllib.parse.urljoin(self.target, path)
resp = requests.request(
method=request.method,
url=url,
headers={key: value for (key, value) in request.headers
if key.lower() not in HOP_BY_HOP_HEADERS},
data=request.get_data(),
cookies=request.cookies,
allow_redirects=False,
stream=True,
verify=self.verify_ssl
)
When path is [http://127.0.0.1:19190/metadata](http://127.0.0.1:19190/metadata%60), urljoin(self.target, path) returns [http://127.0.0.1:19190/metadata](http://127.0.0.1:19190/metadata%60). The proxy sends the request to Bob's chosen URL rather than Alice's target.
Severity ?
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "zrok"
},
"ranges": [
{
"events": [
{
"introduced": "0.4.47"
},
{
"last_affected": "1.1.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-45568"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-19T15:16:08Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "## Summary\n\nAlice exposes a Python SDK `ProxyShare` with a fixed target URL. Bob sends a request to the share with an absolute URL in the path. The Flask handler passes that path to `urllib.parse.urljoin`, which replaces Alice\u0027s configured target host with Bob\u0027s host and returns the server-side response to Bob.\n\n## Details\n\nThe Python SDK proxy route accepts every path under the share:\n\n```python\n@app.route(\u0027/\u0027, defaults={\u0027path\u0027: \u0027\u0027}, methods=[\u0027GET\u0027, \u0027POST\u0027, \u0027PUT\u0027, \u0027DELETE\u0027, \u0027PATCH\u0027, \u0027OPTIONS\u0027])\n@app.route(\u0027/\u003cpath:path\u003e\u0027, methods=[\u0027GET\u0027, \u0027POST\u0027, \u0027PUT\u0027, \u0027DELETE\u0027, \u0027PATCH\u0027, \u0027OPTIONS\u0027])\ndef proxy(path):\n```\n\nIt constructs the outbound URL with `urljoin` and then sends the request:\n\n```python\nurl = urllib.parse.urljoin(self.target, path)\nresp = requests.request(\n method=request.method,\n url=url,\n headers={key: value for (key, value) in request.headers\n if key.lower() not in HOP_BY_HOP_HEADERS},\n data=request.get_data(),\n cookies=request.cookies,\n allow_redirects=False,\n stream=True,\n verify=self.verify_ssl\n)\n```\n\nWhen `path` is `[http://127.0.0.1:19190/metadata`](http://127.0.0.1:19190/metadata%60), `urljoin(self.target, path)` returns `[http://127.0.0.1:19190/metadata`](http://127.0.0.1:19190/metadata%60). The proxy sends the request to Bob\u0027s chosen URL rather than Alice\u0027s target.",
"id": "GHSA-jh67-hwqw-m5r7",
"modified": "2026-05-19T15:16:08Z",
"published": "2026-05-19T15:16:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openziti/zrok/security/advisories/GHSA-jh67-hwqw-m5r7"
},
{
"type": "PACKAGE",
"url": "https://github.com/openziti/zrok"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:L",
"type": "CVSS_V4"
}
],
"summary": "rok Python ProxyShare can be used as an SSRF proxy through absolute URL paths"
}
PYSEC-2026-577
Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:23
VLAI?
Details
Summary
Alice exposes a Python SDK ProxyShare with a fixed target URL. Bob sends a request to the share with an absolute URL in the path. The Flask handler passes that path to urllib.parse.urljoin, which replaces Alice's configured target host with Bob's host and returns the server-side response to Bob.
Details
The Python SDK proxy route accepts every path under the share:
@app.route('/', defaults={'path': ''}, methods=['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'])
@app.route('/<path:path>', methods=['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'])
def proxy(path):
It constructs the outbound URL with urljoin and then sends the request:
url = urllib.parse.urljoin(self.target, path)
resp = requests.request(
method=request.method,
url=url,
headers={key: value for (key, value) in request.headers
if key.lower() not in HOP_BY_HOP_HEADERS},
data=request.get_data(),
cookies=request.cookies,
allow_redirects=False,
stream=True,
verify=self.verify_ssl
)
When path is [http://127.0.0.1:19190/metadata](http://127.0.0.1:19190/metadata%60), urljoin(self.target, path) returns [http://127.0.0.1:19190/metadata](http://127.0.0.1:19190/metadata%60). The proxy sends the request to Bob's chosen URL rather than Alice's target.
Severity ?
Impacted products
| Name | purl | zrok | pkg:pypi/zrok |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "zrok",
"purl": "pkg:pypi/zrok"
},
"ranges": [
{
"events": [
{
"introduced": "0.4.47"
},
{
"last_affected": "1.1.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.47",
"0.4.48",
"0.4.49",
"1.0.0",
"1.0.1",
"1.0.2",
"1.0.3",
"1.0.4",
"1.0.5",
"1.0.6",
"1.0.7",
"1.0.8",
"1.1.0",
"1.1.1",
"1.1.10",
"1.1.11",
"1.1.2",
"1.1.3",
"1.1.5",
"1.1.7",
"1.1.8",
"1.1.9"
]
}
],
"aliases": [
"CVE-2026-45568",
"GHSA-jh67-hwqw-m5r7"
],
"details": "## Summary\n\nAlice exposes a Python SDK `ProxyShare` with a fixed target URL. Bob sends a request to the share with an absolute URL in the path. The Flask handler passes that path to `urllib.parse.urljoin`, which replaces Alice\u0027s configured target host with Bob\u0027s host and returns the server-side response to Bob.\n\n## Details\n \nThe Python SDK proxy route accepts every path under the share:\n\n```python\n@app.route(\u0027/\u0027, defaults={\u0027path\u0027: \u0027\u0027}, methods=[\u0027GET\u0027, \u0027POST\u0027, \u0027PUT\u0027, \u0027DELETE\u0027, \u0027PATCH\u0027, \u0027OPTIONS\u0027])\n@app.route(\u0027/\u003cpath:path\u003e\u0027, methods=[\u0027GET\u0027, \u0027POST\u0027, \u0027PUT\u0027, \u0027DELETE\u0027, \u0027PATCH\u0027, \u0027OPTIONS\u0027])\ndef proxy(path):\n```\n\nIt constructs the outbound URL with `urljoin` and then sends the request:\n\n```python\nurl = urllib.parse.urljoin(self.target, path)\nresp = requests.request(\n method=request.method,\n url=url,\n headers={key: value for (key, value) in request.headers\n if key.lower() not in HOP_BY_HOP_HEADERS},\n data=request.get_data(),\n cookies=request.cookies,\n allow_redirects=False,\n stream=True,\n verify=self.verify_ssl\n)\n```\n\nWhen `path` is `[http://127.0.0.1:19190/metadata`](http://127.0.0.1:19190/metadata%60), `urljoin(self.target, path)` returns `[http://127.0.0.1:19190/metadata`](http://127.0.0.1:19190/metadata%60). The proxy sends the request to Bob\u0027s chosen URL rather than Alice\u0027s target.",
"id": "PYSEC-2026-577",
"modified": "2026-07-01T20:23:12.283893Z",
"published": "2026-06-29T11:50:50.353793Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openziti/zrok/security/advisories/GHSA-jh67-hwqw-m5r7"
},
{
"type": "PACKAGE",
"url": "https://github.com/openziti/zrok"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/zrok"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-jh67-hwqw-m5r7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45568"
}
],
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:L",
"type": "CVSS_V4"
}
],
"summary": "rok Python ProxyShare can be used as an SSRF proxy through absolute URL paths"
}