{"cve":"CVE-2025-69224","nvd":{"published":"2026-01-05T23:15:40.697","modified":"2026-10-11T20:10:00.200","status":"Analyzed","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-444"],"references":["https://github.com/aio-libs/aiohttp/commit/32677f2adfd907420c078dda6b79225c6f4ebce0","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-69f9-5gxw-wvc2"],"products":["aiohttp:aiohttp"],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2025-69224","score":0.0025,"percentile":0.16186,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-69f9-5gxw-wvc2","url":"https://osv.dev/vulnerability/GHSA-69f9-5gxw-wvc2","summary":"AIOHTTP's unicode processing of header values could cause parsing discrepancies","modified":"2026-09-10T03:49:54.440954011Z","packages":[{"ecosystem":"PyPI","name":"aiohttp","purl":"pkg:pypi/aiohttp","ranges":["<3.13.3"],"fixed":["3.13.3"]}]},{"id":"PYSEC-2026-1099","url":"https://osv.dev/vulnerability/PYSEC-2026-1099","summary":"AIOHTTP's unicode processing of header values could cause parsing discrepancies","modified":"2026-07-07T17:46:25.754485012Z","packages":[{"ecosystem":"PyPI","name":"aiohttp","purl":"pkg:pypi/aiohttp","ranges":["<3.13.3"],"fixed":["3.13.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}