{"action":"Upgrade aiohttp to 3.8.5 or later.","affected":[{"fixed":"3.8.5","introduced":"0"}],"component":"aiohttp","cve_ids":["CVE-2023-37276"],"ecosystem":"PyPI","epss":0.01337,"exploited":false,"fixed_versions":["3.8.5"],"ghsa_id":"GHSA-45c4-8wx5-qw6w","id":"tcs_01M5KEX89TY7DN9DMVVGHKD5B1","modified_at":"2026-09-10T03:49:42.592843584Z","published_at":"2023-07-20T14:52:00Z","references":["https://osv.dev/vulnerability/GHSA-45c4-8wx5-qw6w","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-45c4-8wx5-qw6w","https://nvd.nist.gov/vuln/detail/CVE-2023-37276","https://github.com/aio-libs/aiohttp/commit/9337fb3f2ab2b5f38d7e98a194bde6f7e3d16c40","https://github.com/aio-libs/aiohttp/commit/9c13a52c21c23dfdb49ed89418d28a5b116d0681","https://hackerone.com/reports/2001873","https://github.com/aio-libs/aiohttp","https://github.com/aio-libs/aiohttp/blob/v3.8.4/.gitmodules","https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-120.yaml"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-45c4-8wx5-qw6w","url":"https://osv.dev/vulnerability/GHSA-45c4-8wx5-qw6w"}],"summary":"aiohttp.web.Application vulnerable to HTTP request smuggling via llhttp HTTP request parser"}