CVE-2022-29235: Bigbluebutton

Medium severity, CVSS 5.3. EPSS: 1% 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-rc-6, an attacker who is able to obtain the meeting identifier for a meeting on a server can find information related to an external video being shared, like the current timestamp and play/pause. The problem has been patched in versions 2.3.18 and 2.4-rc-6 by modifying the stream to send the data only for users in the meeting. There are currently no known workarounds.

Affected products

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

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