CVE-2026-4267

HIGH

Query Monitor <= 3.20.3 - Reflected Cross-Site Scripting via Request URI

Title source: cna
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v3 7.2
EPSS 0.0030
EPSS Percentile 21.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
johnbillion/Query Monitor < 3.20.3
johnbillion/Query Monitor – The developer tools panel for WordPress < 3.20.3
Published Mar 31, 2026
Tracked Since Mar 31, 2026