Bug 2512312 (CVE-2026-67434)

Summary: CVE-2026-67434 squizlabs/php_codesniffer: PHP_CodeSniffer: Arbitrary code execution via crafted filenames in blame reports
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in PHP_CodeSniffer. This command injection vulnerability allows an attacker to execute arbitrary shell commands. This occurs when PHP_CodeSniffer processes untrusted files with specially crafted filenames containing shell metacharacters, specifically when generating Gitblame, Hgblame, or Svnblame report formats. This could impact continuous integration pipelines or developer machines reviewing third-party code.
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Description OSIDB Bzimport 2026-08-06 22:28:55 UTC 
PHP_CodeSniffer tokenizes PHP files and detects violations of a defined set of coding standards. Prior to versions 3.13.6 and 4.0.2, PHP_CodeSniffer contains a command injection vulnerability in the code that generates the Gitblame, Hgblame, and Svnblame report formats. As a result, running PHP_CodeSniffer over untrusted files, for example in a continuous integration 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 processes a file whose name contains shell metacharacters. Users using the default Full report, 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. This issue is fixed in versions 3.13.6 and 4.0.2.