CVE-2023-23911: Rocket.chat

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An improper access control vulnerability exists prior to v6 that could allow an attacker to break the E2E encryption of a chat room by a user changing the group key of a chat room.

Affected products

• Rocket.chat Rocket.chat: before 6.0.0 (fixed in 6.0.0)

Published 2023-03-10. Last modified 2026-06-17.