{"action":"Upgrade libarchive to 3.6.2-1+deb12u4 or later.","affected":[{"fixed":"3.6.2-1+deb12u4","introduced":"0"}],"component":"libarchive","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["3.6.2-1+deb12u4"],"id":"tcs_01M5NS7KN1K93GT29QA7DEDGG3","modified_at":"2026-11-07T09:47:24.375027637Z","published_at":"2026-03-19T15:16:28.510Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-4426","https://security-tracker.debian.org/tracker/CVE-2026-4426"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-4426","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-4426"}],"summary":"A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge exten"}