{"id":"CVE-2026-111066","title":"AIOHTTP: File descriptor exhaustion in multipart requests","summary":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently e…","severity":"high","cvss":8.2,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-400","CWE-770"],"vendor":"aio-libs","product":"aiohttp","affected":["aiohttp >= 2.0.0, < 3.14.4"],"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T17:01:01.884Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111066","references":[{"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9xw5-w5jj-pvcg","label":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9xw5-w5jj-pvcg"},{"url":"https://github.com/aio-libs/aiohttp/commit/2d94633b7f1b4c1ba07d647b629a8440652b2d09","label":"https://github.com/aio-libs/aiohttp/commit/2d94633b7f1b4c1ba07d647b629a8440652b2d09"},{"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4","label":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4"}],"tags":["cve.org"],"ingestedAt":"2026-10-19T17:33:42.455Z","slug":"CVE-2026-111066","body":"## Overview\n\nAIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.\n\n## Affected\n\n- `aiohttp >= 2.0.0, < 3.14.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}