{"action":"Upgrade libarchive to 3.7.4-4+deb13u1 or later.","affected":[{"fixed":"3.7.4-4+deb13u1","introduced":"0"}],"component":"libarchive","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.7.4-4+deb13u1"],"id":"tcs_01M5NS7KR0BPD9MVHQF7NXDP4R","modified_at":"2026-10-01T03:03:14.508600314Z","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#Debian:13/libarchive","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"}