CVE-2022-29234: Bigbluebutton

Medium severity, CVSS 4.3. EPSS: 0.8% chance of exploitation in the next 30 days.

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting. Versions 2.3.18 and 2.4.1 contain a patch for this issue. There are currently no known workarounds.

Affected products

• Bigbluebutton Bigbluebutton: from 2.2.0, before 2.3.18 (fixed in 2.3.18); from 2.4, before 2.4.1 (fixed in 2.4.1)

Published 2022-06-02. Last modified 2026-06-17.