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

2026-03-30 23:21

Dmitrii Ignatyev

Strategic Overview

Status

Patched in 3.20.4

Affected PluginQuery Monitor

Affected Version<= 3.20.3

CVSS7.2High

CVECVE-2026-4267

View all Query Monitor vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 3.20.4, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2026-4267 https://www.wordfence.com/threat-intel/vulnerabilities/id/0b75cad9-9f76-4839-8eb2-40d84662846d

CVSS Vector

7.2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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