CVE-2026-46404 — BigBlueButton: Presentation URL Security Hardening
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 …
Published: 2026-07-16 · CVSS: 6.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7