CVE-2026-4267
HIGH EPSS 21.8%
Published Mar 31, 20263mo ago · Modified Jun 17, 20262w ago
7.2 CVSS 3.1
Published Mar 31, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
21.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
References 5
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/query-monitor/tags/3.20.2/output/html/request.php#L60
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/query-monitor/tags/3.20.2/output/html/request.php#L70
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3486705/query-monitor
- research.cleantalk.org https://research.cleantalk.org/cve-2026-4267/
- wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/0b75cad9-9f76-4839-8eb2-40d84662846d?source=cve
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.