Brumbelow

**Name of the Vulnerable Software and Affected Versions** Nextcloud versions prior to 21.1.10 Nextcloud versions prior to 22.0.11 Nextcloud versions prior to 23.0.3 **Description** A low-privileged user can force the microphones of other users to be muted during calls. This occurs due to a missing permission check when using internal signaling in environments where no High-performance Backend is installed. **Recommendations** Update to version 21.1.10. Update to version 22.0.11. Update to version 23.0.3.