PT-2026-56549 · Composer · Composer

Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-59946

Mitre

CVSS v3.1

6.1

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

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.

Fix

Path traversal

Incorrect Permission

Weakness Enumeration

CWE-22

CWE-732

Related Identifiers

CVE-2026-59946

Affected Products

Composer

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-59946 · Security Note
• https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0 · Note
• https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx · Note
• https://github.com/composer/composer/releases/tag/2.10.2 · Note
• https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1 · Note
• https://github.com/composer/composer/releases/tag/2.2.29 · Note