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  4. CVE 2026 42497 archivetar versions before 308 for perl extract
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Back to active CVEs
High · CVSS 7.5CVE-2026-42497

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directoryCVE-2026-42497

Answer in brief

CVE-2026-42497 records a High severity (CVSS 7.5) vulnerability in Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. The current sources do not mark it as known exploited. The current feed maps BINGOS/Archive-Tar (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 26, 2026Updated Nov 10, 2026Source checked Nov 10, 2026First seen by HOL Nov 10, 2026Material review Nov 10, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
6 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps BINGOS/Archive-Tar (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
BINGOS/Archive-Targeneric>=0 <3.083.08
Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)generic>=V3.1.7 <**
Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)generic>=V3.1.7 <**
Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)generic>=V3.1.7 <**
Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)generic>=V3.1.7 <**
Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)generic>=V3.1.7 <**

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for BINGOS/Archive-Tar, Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0).
  2. 2Review the reported fix. Source-reported solution: Upgrade to Archive::Tar 3.08 or later.

Evidence timeline and material changes

  1. Published upstream

    May 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 10, 2026

Sources and claim methodology

  • Source referencecert-portal.siemens.com
  • GitHub security advisorygithub.com
  • Source referencemetacpan.org
  • Source referencecve.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-59, CWE-732
Source
CVE List V5
Source checked
Nov 10, 2026
References
4 linked sources
Open source record