Generated remediation guidance and an executive summary. No account required.
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 can circumvent access restrictions for drawing on the whiteboard. The permission check is inadvertently skipped on the server, due to a previously introduced grace period. The attacker must be a meeting participant. The problem has been patched in versions 2.3.18 and 2.4-rc-6. There are currently no known workarounds.
Cite this page
CVE-2022-29236. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2022-29236
Use CWE-285, Bigbluebutton vendor hub and Bigbluebutton product page to widen CVE-2022-29236 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.