ghsa-9548-qrrj-x5pj
Vulnerability from github
Published
2025-07-14 19:33
Modified
2025-07-15 00:34
Severity ?
Summary
AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections
Details
Summary
The Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request.
Impact
If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.
Patch: https://github.com/aio-libs/aiohttp/commit/e8d774f635dc6d1cd3174d0e38891da5de0e2b6a
{ "affected": [ { "package": { "ecosystem": "PyPI", "name": "aiohttp" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "3.12.14" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2025-53643" ], "database_specific": { "cwe_ids": [ "CWE-444" ], "github_reviewed": true, "github_reviewed_at": "2025-07-14T19:33:31Z", "nvd_published_at": "2025-07-14T21:15:27Z", "severity": "LOW" }, "details": "### Summary\nThe Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request.\n\n### Impact\nIf a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.\n\n----\n\nPatch: https://github.com/aio-libs/aiohttp/commit/e8d774f635dc6d1cd3174d0e38891da5de0e2b6a", "id": "GHSA-9548-qrrj-x5pj", "modified": "2025-07-15T00:34:20Z", "published": "2025-07-14T19:33:31Z", "references": [ { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9548-qrrj-x5pj" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53643" }, { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/commit/e8d774f635dc6d1cd3174d0e38891da5de0e2b6a" }, { "type": "PACKAGE", "url": "https://github.com/aio-libs/aiohttp" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U", "type": "CVSS_V4" } ], "summary": " AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections" }
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.