Bug 2498208 (CVE-2026-59947) - CVE-2026-59947 composer/composer: Composer: Information disclosure of credentials via debug output
Summary: CVE-2026-59947 composer/composer: Composer: Information disclosure of credent...
Keywords:
Status: NEW
Alias: CVE-2026-59947
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-08 20:02 UTC by OSIDB Bzimport
Modified: 2026-07-29 13:31 UTC (History)
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Description OSIDB Bzimport 2026-07-08 20:02:21 UTC 
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.
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