{"action":"Upgrade haproxy to 3.2.20-1 or later.","affected":[{"fixed":"3.2.20-1","introduced":"0"}],"component":"haproxy","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.2.20-1"],"id":"tcs_01M5NT02DX3NNKXXFAE0Y23A89","modified_at":"2026-10-27T10:01:44.880924608Z","published_at":"2026-06-18T17:16:34.567Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-55204","https://security-tracker.debian.org/tracker/CVE-2026-55204"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-55204#Debian:14/haproxy","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-55204"}],"summary":"HAProxy through 3.4.0, fixed in commit 9a6d1fe, contains a null pointer dereference vulnerability in hpack_dht_insert() within src/hpack-tbl.c that fails to validate the return value of hpack_dht_defr"}