CVE-2026-42496

CriticalCVSS 9.1/10Last modified Jul 24, 2026

Description

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-59CWE-22

Affected software

No affected versions have been published.

Timeline

Published
May 26, 2026
Last modified
Jul 24, 2026
NVD status
Modified

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