CVE-2026-46404
MEDIUM
NVD
CVSS Score
6.8
Severity
MEDIUM
Published
Jul 16, 2026
Vendor
unknown
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.