CVE-2023-43797 Information

Description

BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3 Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.

Reference

https://github.com/bigbluebutton/bigbluebutton/commit/304bc851a00558f99a908880f4ac44234a074c9d https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-v6wg-q866-h73x https://github.com/bigbluebutton/bigbluebutton/pull/18392