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CVE-2026-42497

HIGH · CVSS 7.5 EPSS 0.40% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-05-26 · Last synced: 2026-06-20

CyberRota Analysis

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Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

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CVE
CVE-2026-42497
Severity
HIGH
CVSS
7.5
EPSS
0.40%

Original NVD Description

Archive::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.