CVE-2026-59946NVD

Vulnerability Summary

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer's binary installation flow to chmod an existing host file to a world-readable and world-executable mode during composer install, update, or require. This issue is fixed in versions 2.2.29 and 2.10.2.

Severity Level

MEDIUM(6.1)

Published Date

Jul 8, 2026

Last Modified

Jul 10, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.14%Probability

Root Weakness (CWE)

CWE-22: Path Traversal ↗

The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory.

CWE-732: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 6.1 (MEDIUM)

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityLow

AvailabilityNone

Affected & Patched Versions

Affected Versions

Not provided by NVD for this CVE.

Patched Versions

Not provided by NVD for this CVE.

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