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TI-2026-30780 Aliases CVE-2026-42497GHSA-fcfm-93gv-wh6f

Link following in BINGOS Archive::Tar

Priority LOW 39CWE-59Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00458 39th percentileScored 2026-11-07
Fix Partial Archive::Tar (BINGOS): 3.08Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
BINGOSArchive::Tarbefore 3.083.08Patch availableCNA
  • Archive::Tar VendorBINGOS Affected before 3.08 Fixed in 3.08 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:archive\:\:tar_project:archive\:\:tar:*:*:*:*:*:perl:*:*tar_project archive\VulnerableBINGOS
  • cpe:2.3:a:archive\:\:tar_project:archive\:\:tar:*:*:*:*:*:perl:*:* Versions tar_project archive\ Vulnerable ·BINGOS

Remediation

  • Fix · CNA Archive::Tar (BINGOS) Fixed in 3.08

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    BINGOS Archive::Tar 3.08

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-30779 Link following in BINGOS Archive::TarPriority MEDIUM 46
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42497
  2. 2026-10-03 Alias added: GHSA-fcfm-93gv-wh6f

References

Patch 1

Advisory 1

Other 1

  • TI-2026-30779 Link following in BINGOS Archive::Tar CVSS 3.1CRITICAL 9.1
  • TI-2018-08610 In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a… CVSS 3.0HIGH 7.5
  • TI-2026-08380 Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker… CVSS 3.1HIGH 7.5
  • TI-2007-04673 Directory traversal vulnerability in the Archive::Tar Perl module 1.36 and earlier allows… CVSS 2.0MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences