{"action":"Upgrade aiohttp to 3.13.4 or later.","affected":[{"fixed":"3.13.4","introduced":"0"}],"component":"aiohttp","cve_ids":["CVE-2026-34514"],"ecosystem":"PyPI","epss":0.00315,"exploited":false,"fixed_versions":["3.13.4"],"ghsa_id":"GHSA-2vrm-gr82-f7m5","id":"tcs_01M5KETBBB8CWS9T61VWECDQAP","modified_at":"2026-09-10T03:50:42.288164171Z","published_at":"2026-04-01T21:20:06Z","references":["https://osv.dev/vulnerability/GHSA-2vrm-gr82-f7m5","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2vrm-gr82-f7m5","https://nvd.nist.gov/vuln/detail/CVE-2026-34514","https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06","https://github.com/aio-libs/aiohttp","https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4"],"severity":{"label":"low"},"sources":[{"source":"osv","source_id":"GHSA-2vrm-gr82-f7m5","url":"https://osv.dev/vulnerability/GHSA-2vrm-gr82-f7m5"}],"summary":"AIOHTTP has CRLF injection through multipart part content type header construction"}