PT-2026-56550 · Composer · Composer

Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-59947

NVD

CVSS v3.1

4.7

Medium

Base vector

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

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, when Composer is run with -vvv debug verbosity, it could print a credential embedded in the username slot of a repository or package URL, such as a GitHub Personal Access Token in https://TOKEN@host/, to debug output because AuthHelper, Url::sanitize, and ProcessExecutor did not sanitize username-only URL credentials. This issue is fixed in versions 2.2.29 and 2.10.2.

Fix

Insertion into Log File

Weakness Enumeration

CWE-532

Related Identifiers

CVE-2026-59947

Affected Products

Composer

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-59947 · Security Note
• https://github.com/composer/composer/releases/tag/2.2.29 · Note
• https://github.com/composer/composer/commit/8887ad76fbd830cb1861a2b1fd8ead78ed1fa1ec · Note
• https://github.com/composer/composer/security/advisories/GHSA-g6xq-892h-64w3 · Note
• https://github.com/composer/composer/releases/tag/2.10.2 · Note
• https://github.com/composer/composer/commit/6bd66874ae523ecb69aca5964487a0cdfda03ef8 · Note