CVE-2026-59946

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.

• CWE-22
• CWE-732

• https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0
• https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1
• 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

Published

Jul 8, 2026

Last Modified

Jul 10, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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