CVE-2026-42496

Public on 2026-05-26
Modified on 2026-05-27
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.

NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396459/
Severity
Important severity
Important
See what this means
CVSS v3 Base Score
7.1
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core perl-Archive-Tar 2026-06-08 ALAS2-2026-3347 Fixed
Amazon Linux 2023 perl-Archive-Tar 2026-06-08 ALAS2023-2026-1805 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD CVSSv3 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N