CVE-2026-67434: PHP_CodeSniffer gitblame report command injection via crafted filename
PHP_CodeSniffer versions before v3.13.6 and v4.0.2 contain a command injection vulnerability in the code creating the Gitblame, Hgblame and Svnblame report(s).
As a result, running PHP_CodeSniffer over untrusted files, for example, in a CI pipeline that scans pull requests, or on a developer machine reviewing third-party code, could result in attacker-controlled shell commands being executed when the Gitblame, Hgblame or Svnblame report(s) would process a file whose name contains shell metacharacters.
- Users using the default
Fullreport, or any of the other non-*blame reports, are not affected. - Users on a runtime platform which does not allow filenames to contain shell metacharacters, such as
"and;, are not affected.
References
- github.com/FriendsOfPHP/security-advisories/blob/master/squizlabs/php_codesniffer/CVE-2026-67434.yaml
- github.com/PHPCSStandards/PHP_CodeSniffer/commit/7a3a6bbf153a03fa3a9413afc60bded6b764e76b
- github.com/PHPCSStandards/PHP_CodeSniffer/commit/f0e1ebb0563f0e5d7f190497a787bcaf8474f3fe
- github.com/PHPCSStandards/PHP_CodeSniffer/pull/1473
- github.com/PHPCSStandards/PHP_CodeSniffer/releases/tag/3.13.6
- github.com/PHPCSStandards/PHP_CodeSniffer/releases/tag/4.0.2
- github.com/PHPCSStandards/PHP_CodeSniffer/security/advisories/GHSA-hmqg-cxww-wqhq
- github.com/advisories/GHSA-hmqg-cxww-wqhq
- nvd.nist.gov/vuln/detail/CVE-2026-67434
Code Behaviors & Features
Detect and mitigate CVE-2026-67434 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →