Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f9
- https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf9
- https://github.com/composer/composer/releases/tag/2.10.2
- https://github.com/composer/composer/releases/tag/2.2.29
- https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx
FAQ
What is CVE-2026-59946?
CVE-2026-59946 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2026-59946?
CVE-2026-59946 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-59946?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.