Generated remediation guidance and an executive summary. No account required.
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds.
Cite this page
CVE-2022-41961. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2022-41961
Use CWE-345, Bigbluebutton vendor hub and Bigbluebutton product page to widen CVE-2022-41961 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2025-61602, CVE-2025-61601 and CVE-2026-27466 for nearby disclosures in the same product family.