CVE-2025-66113: Themeatelier Better Chat Support For Messenger

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

Missing Authorization vulnerability in ThemeAtelier Better Chat Support for Messenger better-chat-support allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Better Chat Support for Messenger: from n/a through <= 1.2.18.

Affected products

• Themeatelier Better Chat Support For Messenger: up to and including 1.2.18

Published 2025-11-21. Last modified 2026-06-17.