CVE-2026-59947

Name	CVE-2026-59947
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
composer (PTS)	bullseye (security), bullseye	2.0.9-2+deb11u4	vulnerable
	bookworm	2.5.5-1+deb12u4	vulnerable
	bookworm (security)	2.5.5-1+deb12u2	vulnerable
	trixie	2.8.8-1+deb13u2	vulnerable
	forky, sid	2.10.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
composer	source	(unstable)	2.10.2-1

Notes

[trixie] - composer <no-dsa> (Minor issue)
https://github.com/composer/composer/security/advisories/GHSA-g6xq-892h-64w3
Fixed by: https://github.com/composer/composer/commit/8887ad76fbd830cb1861a2b1fd8ead78ed1fa1ec (2.10.2)
Fixed by: https://github.com/composer/composer/commit/6bd66874ae523ecb69aca5964487a0cdfda03ef8 (2.2.29)