CVE-2026-41127: Bigbluebutton

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available.

Affected products

• Bigbluebutton Bigbluebutton: before 3.0.24 (fixed in 3.0.24)

Published 2026-04-22. Last modified 2026-06-17.