CVE-2026-39575

MEDIUM 6.5

WordPress Custom Query Blocks plugin <= 5.5.0 - Cross Site Scripting (XSS) vulnerability

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ronald Huereca Custom Query Blocks post-type-archive-mapping allows DOM-Based XSS.This issue affects Custom Query Blocks: from n/a through <= 5.5.0.

CWE	CWE-79
Vendor	ronald huereca
Product	custom query blocks
Published	Apr 8, 2026
Last Updated	Apr 29, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

Ronald Huereca / Custom Query Blocks

0 ≤ 5.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/post-type-archive-mapping/vulnerability/wordpress-custom-query-blocks-plugin-5-5-0-cross-site-scripting-xss-vulnerability?_s_id=cve

Credits

Jitlada | Patchstack Bug Bounty Program