CVE-2026-55489

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton presenters could submit a presentationId through /api/graphql that identified a presentation belonging to another meeting...

CVE-2026-55489 BigBlueButton: IDOR on BBB through /api/graphql via POST parameter "presentationId" leads to Authentication Bypass

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton presenters could submit a presentationId through /api/graphql that identified a presentation belonging to another meeting...

CVE-2026-55489 BigBlueButton: IDOR on BBB through /api/graphql via POST parameter "presentationId" leads to Authentication Bypass

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton presenters could submit a presentationId through /api/graphql that identified a presentation belonging to another meeting...

CVE-2026-55489

BigBlueButton (open-source virtual classroom) is vulnerable to an IDOR (Insecure Direct Object Reference) in its presentation deletion handler. Prior to 3.0.29 , the file RemovePresentationPubMsgHdlr.scala did not verify that a submitted presentationId belonged to the same meeting before performi...

PT-2026-79191

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.29 Description Presenters can submit a presentationId through the '/api/graphql' endpoint that identifies a presentation belonging to a different meeting. The RemovePresentationPubMsgHdlr.scala function fail...