{"action":"Upgrade python-aiohttp to 3.13.5-1 or later.","affected":[{"fixed":"3.13.5-1","introduced":"0"}],"component":"python-aiohttp","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.13.5-1"],"id":"tcs_01M5NRSJZR3PGG68KA4RVM6G0G","modified_at":"2026-11-01T00:00:12.611951408Z","published_at":"2026-04-01T21:17:00.490Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-34525","https://security-tracker.debian.org/tracker/CVE-2026-34525"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-34525#Debian:14/python-aiohttp","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-34525"}],"summary":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4."}