{"schema":"threatline.record/2","record":{"id":"CVE-2026-111750","aliases":["GHSA-pqxq-w44r-73xw"],"summary":"AIOHTTP: Pure-Python parser request smuggling","details":"### Summary\n\nThe pure Python parser is vulnerable to an HTTP request smuggling attack.\n\n### Impact\n\nIf users are using the Python parser (`AIOHTTP_NO_EXTENSIONS`, or not a standard wheel installed), then an application may be vulnerable to a request smuggling attack.\n\n### Workaround\n\nSwitch to the default C parser.","categories":["Libraries & packages"],"product":"aiohttp","vendor":"aio-libs","ecosystem":"pip","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-pqxq-w44r-73xw","source_modified_at":"2026-10-20T19:52:22Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"pip","name":"aiohttp"},"range":"<= 3.14.3"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111750","source_modified_at":"2026-10-19T17:06:37.997Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"aiohttp","vendor":"aio-libs","versions":[{"version":"< 3.14.4","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pqxq-w44r-73xw","source_modified_at":"2026-10-20T20:00:04.694820004Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"aiohttp","ecosystem":"PyPI","purl":"pkg:pypi/aiohttp"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.14.4"}]}],"versions":["0.1","0.10.0","0.10.1","0.10.2","0.11.0","0.12.0","0.13.0","0.13.1","0.14.0","0.14.1","0.14.2","0.14.3","0.14.4","0.15.0","0.15.1","0.15.2","0.15.3","0.16.0","0.16.1","0.16.2","0.16.3","0.16.4","0.16.5","0.16.6","0.17.0","0.17.1","0.17.2","0.17.3","0.17.4","0.18.0","0.18.1","0.18.2","0.18.3","0.18.4","0.19.0","0.2","0.20.0","0.20.1","0.20.2","0.21.0","0.21.1","0.21.2","0.21.4","0.21.5","0.21.6","0.22.0","0.22.0a0","0.22.0b0","0.22.0b1","0.22.0b2"]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-pqxq-w44r-73xw","source_modified_at":"2026-10-20T19:52:22Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"pip","name":"aiohttp"},"version":"3.14.4"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pqxq-w44r-73xw","source_modified_at":"2026-10-20T20:00:04.694820004Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"aiohttp","ecosystem":"PyPI","purl":"pkg:pypi/aiohttp"},"version":"3.14.4"}],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00304,"percentile":0.2205,"score_date":"2026-10-23"},"published_at":"2026-10-19T17:06:37.997Z","modified_at":"2026-10-20T20:00:04.694820004Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-pqxq-w44r-73xw","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-20T19:52:22Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111750","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T17:06:37.997Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-pqxq-w44r-73xw","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T20:00:04.694820004Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111750","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-pqxq-w44r-73xw","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111750","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/aio-libs/aiohttp/commit/9b27347e61454d9f8ca2055f4c67a37dee336e83","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-pqxq-w44r-73xw","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-20T20:00:04.694820004Z","content_hash":"f63ffc5059cc83332434f99a146c97226e3f237048689e67023090467d377b13"}}