CVE-2026-42496

CRITICAL

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. _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. A subsequent open through the extracted name reads or writes the attacker chosen path.

CVSS v3.1 Score

9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Published: 5/26/2026Modified: 5/28/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-42496 — Archive::Tar versions before 3.08 for Perl extract symlinks with attacker contro...

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. _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. A subsequent open through the extracted na

CVE-2026-42496
NIST NVD

References (3)

https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patchPatchhttps://metacpan.org/release/BINGOS/Archive-Tar-3.08/changesRelease Noteshttps://www.cve.org/CVERecord?id=CVE-2026-42497Third Party Advisory