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

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-4267
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-31 12:16:31 UTC
Updated2026-04-01 14:24:02 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

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

EPSS: 0.000650000 probability, percentile 0.202070000 (date 2026-04-01)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Johnbillion Query Monitor The Developer Tools Panel For WordPress affected * 3.20.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/query-monitor/tags/3.20.2/output/html/request.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3486705/query-monitor [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/0b75cad9-9f76-4839-8eb2-40d84... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/query-monitor/tags/3.20.2/output/html/request.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Dmitrii Ignatyev (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-30T23:21:22.000ZDisclosed
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