Insertion of Sensitive Information into Log File Affecting setup-php package, versions <2.37.1
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- published25 May 2026
- disclosed20 May 2026
- creditshivammathur
Introduced: 20 May 2026
CVE NOT AVAILABLE CWE-532 (opens in a new tab)How to fix?
Upgrade setup-php to version 2.37.1 or higher.
Overview
setup-php is a Setup PHP for use with GitHub Actions
Affected versions of this package are vulnerable to Insertion of Sensitive Information into Log File via the process that configures GitHub tokens for Composer in workflows where an exact affected Composer version is pinned. An attacker can obtain sensitive authentication tokens by accessing public repository logs that may inadvertently expose these tokens during Composer's validation of github-oauth authentication, especially when Composer rejects GitHub's newer hyphen-containing token format. This is only exploitable if a workflow pins an exact affected Composer version through the process, rather than using the default or a patched Composer version.
Workaround
This vulnerability can be mitigated by avoiding the use of pinned affected Composer versions or by using patched Composer releases.