medium4.9
CVE-2026-55489
BigBlueButton is an open-source virtual classroom.
Impact
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. akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/presentationpod/RemovePresentationPubMsgHdlr.scala did not verify the presentation's meeting identifier before deletion, allowing a presenter who knew the identifier to delete another meeting's presentation and disrupt its availability. This issue is fixed in version 3.0.29.
Affected products
| Product | Affected versions |
|---|---|
| BigBlueButton Is An Open-Source Virtual Classroom. | before 3.0.29 |
Versions were read from the advisory text. No structured product data has been published for this record yet.