CVE-2026-42496 PUBLISHED

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory

Assigner: CPANSec
Reserved: 27.04.2026 Published: 26.05.2026 Updated: 26.05.2026

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.

Product Status

Vendor BINGOS
Product Archive::Tar
Versions Default: unaffected
  • affected from 0 to 3.08 (excl.)

Solutions

Upgrade to Archive::Tar 3.08 or later.

References

Problem Types

  • CWE-59 Improper Link Resolution Before File Access ('Link Following') CWE