Description
BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have an Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL." Version 3.0.24 has adjusted the handling of requests with incorrect checksum so that the default logoutURL is used. No known workarounds are available.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| bigbluebutton | bigbluebutton | < 3.0.24 | — |
Advisories 1
- WID-SEC-2026-1084 BigBlueButton: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 21, 2026