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CVE-2026-59946

Composer: Path traversal in package bin field lets dependencies chmod arbitrary host files PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
composer / composeraffected >= 1.0, < 2.2.29; affected >= 2.3.0, < 2.10.2

CWE

CWE-22, CWE-732

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.