{"action":"Upgrade aiohttp to 3.14.1 or later.","affected":[{"fixed":"3.14.1","introduced":"0"}],"component":"aiohttp","cve_ids":["CVE-2026-54277"],"ecosystem":"PyPI","epss":0.00563,"exploited":false,"fixed_versions":["3.14.1"],"ghsa_id":"GHSA-63hw-fmq6-xxg2","id":"tcs_01M5KF294G75B1KAQZFYBE13Q1","modified_at":"2026-09-10T03:50:48.460120366Z","published_at":"2026-06-15T20:09:16Z","references":["https://osv.dev/vulnerability/GHSA-63hw-fmq6-xxg2","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-63hw-fmq6-xxg2","https://github.com/aio-libs/aiohttp/commit/5ab61bb4cd88f19b712f12c7c9295fe262bf804d","https://github.com/aio-libs/aiohttp"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-63hw-fmq6-xxg2","url":"https://osv.dev/vulnerability/GHSA-63hw-fmq6-xxg2"},{"source":"nvd","source_id":"CVE-2026-54277","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54277"}],"summary":"aiohttp: C HTTP Parser Bypasses max_line_size for Fragmented Lines"}