CVE-2026-42497 (GCVE-0-2026-42497)

Vulnerability from cvelistv5 – Published: 2026-05-26 00:17 – Updated: 2026-05-28 13:14
VLAI
Title
Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 13:13 UTC
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 62/100 over 346 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
BINGOS Archive::Tar Affected: 0 , < 3.08 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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