CVE-2025-66099: Themeatelier Chat Help

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Missing Authorization vulnerability in ThemeAtelier Chat Help chat-help allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Chat Help: from n/a through <= 3.1.3.

Affected products

• Themeatelier Chat Help: up to and including 3.1.3

Published 2025-11-21. Last modified 2026-10-08.