CVE-2026-55491 BigBlueButton: Stored XSS in Screenshare Recording Playback via Unescaped Meeting Name

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton failed to escape meetingName in record-and-playback/screenshare/playback/index.html.erb when generating the screenshare playback format. A low-privileged user could store a crafted meeting name that embedded script...

EUVD-2026-63682

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton failed to escape meetingName in record-and-playback/screenshare/playback/index.html.erb when generating the screenshare playback format. A low-privileged user could store a crafted meeting name that embedded script...

CVE-2026-46355

BigBlueButton prior to 3.0.23 exposed the /bigbluebutton/api/handleJoinExistingUser endpoint through a routable controller action in ApiController.groovy rather than a private helper. An authenticated requester who could supply the existingUserID of an active participant was able to reuse that pa...

CVE-2026-46355 BigBlueButton: Unauthenticated Session Hijack via Exposed /bigbluebutton/api/handleJoinExistingUser

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active...

CVE-2026-46355 BigBlueButton: Unauthenticated Session Hijack via Exposed /bigbluebutton/api/handleJoinExistingUser

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active...

EUVD-2026-63680

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active...

CVE-2026-46355 BigBlueButton: Unauthenticated Session Hijack via Exposed /bigbluebutton/api/handleJoinExistingUser

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active...

CVE-2026-46682 BigBlueButton: Blind SQL Injection AUTH (Moderator)

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated moderators to inject SQL through the meetingId and userId values used by refreshBreakoutRoomsVisibleForUsers in akka-bbb-apps/src/main/scala/org/bigbluebutton/core/db/BreakoutRoomUserDAO.scala...

CVE-2026-46682

BigBlueButton (open-source virtual classroom) is vulnerable to SQL injection in versions prior to 3.0.23 . The flaw resides in the refreshBreakoutRoomsVisibleForUsers method within BreakoutRoomUserDAO.scala, which interpolates meetingId and userId values directly into breakout room visibility que...

CVE-2026-46682 BigBlueButton: Blind SQL Injection AUTH (Moderator)

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated moderators to inject SQL through the meetingId and userId values used by refreshBreakoutRoomsVisibleForUsers in akka-bbb-apps/src/main/scala/org/bigbluebutton/core/db/BreakoutRoomUserDAO.scala...

EUVD-2026-63677

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated moderators to inject SQL through the meetingId and userId values used by refreshBreakoutRoomsVisibleForUsers in akka-bbb-apps/src/main/scala/org/bigbluebutton/core/db/BreakoutRoomUserDAO.scala...

CVE-2026-46682 BigBlueButton: Blind SQL Injection AUTH (Moderator)

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated moderators to inject SQL through the meetingId and userId values used by refreshBreakoutRoomsVisibleForUsers in akka-bbb-apps/src/main/scala/org/bigbluebutton/core/db/BreakoutRoomUserDAO.scala...

PT-2026-79184

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.23 Description Authenticated moderators can perform SQL injection through the meetingId and userId variables used by the refreshBreakoutRoomsVisibleForUsers function in the BreakoutRoomUserDAO.scala file. Th...

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...

CVE-2026-55491: Improper Neutralization of Input During Web Page Generation

BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton failed to escape meetingName in record-and-playback/screenshare/playback/index.html.erb when generating the screenshare playback format. A low-privileged user could store a crafted meeting name that embedded script...

CVE-2026-46355: Improper Authentication

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active...

CVE-2026-46682: Improper Neutralization of Special Elements used in an SQL Command

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated moderators to inject SQL through the meetingId and userId values used by refreshBreakoutRoomsVisibleForUsers in akka-bbb-apps/src/main/scala/org/bigbluebutton/core/db/BreakoutRoomUserDAO.scala...

CVE-2026-55489: Authorization Bypass Through User-Controlled Key

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...

PT-2026-79192

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.29 Description An issue exists where the software fails to escape the meetingName variable in the record-and-playback/screenshare/playback/index.html.erb file during the generation of the screenshare playbac...

PT-2026-79183

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active...