{"action":"Upgrade aiohttp to 3.13.4 or later.","affected":[{"fixed":"3.13.4","introduced":"0"}],"component":"aiohttp","cve_ids":["CVE-2026-22815"],"ecosystem":"PyPI","epss":0.00457,"exploited":false,"fixed_versions":["3.13.4"],"ghsa_id":"GHSA-w2fm-2cpv-w7v5","id":"tcs_01M5KG16RAFS3E38PGFKTQN9HF","modified_at":"2026-09-10T03:51:03.588955358Z","published_at":"2026-04-01T19:45:17Z","references":["https://osv.dev/vulnerability/GHSA-w2fm-2cpv-w7v5","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-w2fm-2cpv-w7v5","https://nvd.nist.gov/vuln/detail/CVE-2026-22815","https://github.com/aio-libs/aiohttp/commit/0c2e9da51126238a421568eb7c5b53e5b5d17b36","https://github.com/aio-libs/aiohttp","https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-w2fm-2cpv-w7v5","url":"https://osv.dev/vulnerability/GHSA-w2fm-2cpv-w7v5"},{"source":"nvd","source_id":"CVE-2026-22815","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22815"}],"summary":"aiohttp allows unlimited trailer headers, leading to possible uncapped memory usage"}