{"action":"Upgrade aiohttp to 3.14.1 or later.","affected":[{"fixed":"3.14.1","introduced":"0"}],"component":"aiohttp","cve_ids":["CVE-2026-54279"],"ecosystem":"PyPI","epss":0.00493,"exploited":false,"fixed_versions":["3.14.1"],"ghsa_id":"GHSA-2fqr-mr3j-6wp8","id":"tcs_01M5KESH3FWGANGDQA46Q7XDYZ","modified_at":"2026-11-03T16:45:04.163545105Z","published_at":"2026-06-15T20:08:51Z","references":["https://osv.dev/vulnerability/GHSA-2fqr-mr3j-6wp8","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2fqr-mr3j-6wp8","https://github.com/aio-libs/aiohttp","https://nvd.nist.gov/vuln/detail/CVE-2026-54279","https://github.com/aio-libs/aiohttp/commit/a329a7aacad5284f087af36103aff778746da0f2","https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2026-2112.yaml"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-2fqr-mr3j-6wp8","url":"https://osv.dev/vulnerability/GHSA-2fqr-mr3j-6wp8"},{"source":"nvd","source_id":"CVE-2026-54279","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54279"}],"summary":"aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence"}