High severity7.2NVD Advisory· Published Mar 31, 2026· Updated Apr 24, 2026
CVE-2026-4267
CVE-2026-4267
Description
The Query Monitor – The developer tools panel for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘$_SERVER['REQUEST_URI']’ parameter in all versions up to, and including, 3.20.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
johnbillion/query-monitorPackagist | < 3.20.4 | 3.20.4 |
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- github.com/advisories/GHSA-2xr4-chcf-vmvfghsaADVISORY
- github.com/johnbillion/query-monitor/security/advisories/GHSA-2xr4-chcf-vmvfghsaWEB
- plugins.trac.wordpress.org/browser/query-monitor/tags/3.20.2/output/html/request.phpnvd
- plugins.trac.wordpress.org/browser/query-monitor/tags/3.20.2/output/html/request.phpnvd
- plugins.trac.wordpress.org/changeset/3486705/query-monitornvd
- research.cleantalk.org/cve-2026-4267/nvd
- www.wordfence.com/threat-intel/vulnerabilities/id/0b75cad9-9f76-4839-8eb2-40d84662846dnvd
News mentions
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