{"id":"CVE-2026-111064","aliases":["GHSA-5wr8-gcqf-gqf3"],"title":"aiohttp server lacks an initial request/header timeout","summary":"aiohttp server lacks an initial request/header timeout","severity":"high","cvss":8.2,"cwe":["CWE-770"],"vendor":"aiohttp","product":"aiohttp","ecosystem":"pip","affected":["aiohttp <= 3.14.3"],"patched":["aiohttp 3.14.4"],"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T17:08:05Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-5wr8-gcqf-gqf3","references":[{"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-5wr8-gcqf-gqf3"},{"url":"https://github.com/aio-libs/aiohttp/commit/be846822b4b3a5a54b6163e794b42dc06fba54a3"},{"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4"},{"url":"https://github.com/advisories/GHSA-5wr8-gcqf-gqf3"}],"tags":["ghsa","pip","cve.org"],"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","ingestedAt":"2026-10-19T17:33:42.441Z","slug":"CVE-2026-111064","body":"## Overview\n\n### Summary\n\nThe keepalive timeout was not used during the initial portion of a request.\n\n### Impact\n\nAn attacker could keep an idle connection open indefinitely before sending any data.\n\n### Workaround\n\nUse a reverse proxy (as recommended for all production deployments) with sensible keepalive limits.\n\n## Affected packages\n\n- `aiohttp <= 3.14.3`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `aiohttp 3.14.4`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}