Description
BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not properly restrict access to site local and link local addresses. The redirect following logic now pins resolved IPs. This issue is fixed in version 3.0.23.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| bigbluebutton | bigbluebutton | < 3.0.23 | — |
Advisories 1
- WID-SEC-2026-1568 BigBlueButton: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 16, 2026