CVE-2026-42497 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionArchive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. _make_special_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode. A subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone. Metrics
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CVSS 4.0 Severity and Vector Strings:
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