CVE-2025-66686: Grabaperch Perch

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A stored Cross-Site Scripting (XSS) vulnerability exists in Perch CMS version 3.2. An authenticated attacker with administrative privileges can inject malicious JavaScript code into the “Help button url” setting within the admin panel. The injected payload is stored and executed when any authenticated user clicks the Help button, potentially leading to session hijacking, information disclosure, privilege escalation, and unauthorized administrative actions.

Affected products

• Grabaperch Perch: version 3.2 only

Published 2026-01-07. Last modified 2026-06-17.