{"id":"CVE-2026-42496","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-42496","summary":"Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory","details":"Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory.\n\n_make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target.\n\nA subsequent open through the extracted name reads or writes the attacker chosen path.","published":"2026-05-26T00:17:19.110Z","modified":"2026-08-12T03:51:23.230149274Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":{"url":"https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch","label":"jib/archive-tar-new@17c8734"},"references":[{"type":"WEB","url":"https://cpan.org/modules"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42496.json"},{"type":"WEB","url":"https://www.cve.org/CVERecord?id=CVE-2026-42497"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30851"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30852"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30856"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30857"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-42496"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42496.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42496"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2481314"},{"type":"FIX","url":"https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch"},{"type":"PACKAGE","url":"https://github.com/jib/archive-tar-new"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:23.230149274Z"}}