CVE-2026-39575: Ronald Huereca Custom Query Blocks

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Ronald Huereca Custom Query Blocks: up to and including 5.5.0

Published 2026-04-08. Last modified 2026-07-24.