CVE-2026-46404

BigBlueButton: Before 3.0.23, presentation URL validation did not properly restrict site-local/link-local access. The fix pins resolved IPs in redirect logic and is addressed in 3.0.23. No exploitation details provided.

PT-2026-60543

BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web checksum validation could be bypassed when a presentationUploadExternalUrl parameter was supplied to API request handling in CreateMeeting.java and ValidationService.java, allowing a user to send valid requests to some...

CVE-2026-46404: Server-Side Request Forgery (SSRF)

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...