{"id":"CVE-2025-69224","aliases":["GHSA-69f9-5gxw-wvc2","PYSEC-2026-1099"],"url":"https://o3.security/vulnerability/CVE-2025-69224","summary":"AIOHTTP's Unicode processing of header values could cause parsing discrepancies","details":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. 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. This issue is fixed in version 3.13.3.","published":"2026-01-05T22:35:42.084Z","modified":"2026-08-07T11:49:48.913610443Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"aiohttp","fixedVersion":"3.13.3"}],"fix":{"url":"https://github.com/aio-libs/aiohttp/commit/32677f2adfd907420c078dda6b79225c6f4ebce0","label":"aio-libs/aiohttp@32677f2"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/69xxx/CVE-2025-69224.json"},{"type":"ADVISORY","url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-69f9-5gxw-wvc2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-69224"},{"type":"FIX","url":"https://github.com/aio-libs/aiohttp/commit/32677f2adfd907420c078dda6b79225c6f4ebce0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:49:48.913610443Z"}}