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CRITICAL severity

CVE-2006-0931 — archive_tar

CRITICAL

CVE-2006-0931 is a critical-severity (CVSS 9.1) Path Traversal vulnerability in pear/archive_tar. A fix is available for pear/archive_tar — see the affected versions and patch details below.

PEAR::Archive_Tar Directory Traversal vulnerability

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 1, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs84th percentile — riskier than 84% of all scored CVEsHighest risk
0.94%1.60%2.26%2.92%1.4%2.4%May 26Aug 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘pear/archive_tar

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Directory traversal vulnerability in PEAR::Archive_Tar 1.2, and other versions before 1.3.2, allows remote attackers to create and overwrite arbitrary files via certain crafted pathnames in a TAR archive.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistpear/archive_tar≥ 1.2&&< 1.3.21.3.2composer require pear/archive_tar:^1.3.2

Affected Products

1 product · 3 configurations
Application
pear archive tarpear
≤ 1.3.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pear/archive_tar, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update pear/archive_tar to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2006-0931 is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

Directory traversal vulnerability in PEAR::Archive_Tar 1.2, and other versions before 1.3.2, allows remote attackers to create and overwrite arbitrary files via certain crafted pathnames in a TAR archive.
O3 Security · Impact-Aware SCA

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CVE-2006-0931: archive_tar Path Traversal — Fixed in 1.3.2