{"action":"Upgrade haproxy to 2.6.12-1+deb12u4 or later.","affected":[{"fixed":"2.6.12-1+deb12u4","introduced":"0"}],"component":"haproxy","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.6.12-1+deb12u4"],"id":"tcs_01M5NRQSSRJYTGEFJJ51H184CS","modified_at":"2026-10-23T17:47:39.759565051Z","published_at":"2026-04-13T17:16:28.237Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-33555","https://security-tracker.debian.org/tracker/CVE-2026-33555"],"severity":{"label":"medium","score":5.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-33555","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-33555"}],"summary":"An issue was discovered in HAProxy before 3.3.6. The HTTP/3 parser does not check that the received body length matches a previously announced content-length when the stream is closed via a frame with"}