CVE-2026-39575 MEDIUM

CVE-2026-39575: WordPress Custom Query Blocks plugin <= 5.5.0 - Cross Site Scripting (XSS) vulnerability

Vendor Ronald Huereca

Product Custom Query Blocks

Weakness CWE-79 · XSS

Published April 8, 2026

Last update April 29, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

Description

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.

Key dates

Disclosure timeline

April 8, 2026 CVE published

April 29, 2026 Record updated