CVE-2025-61602 | THREATINT

Description

BigBlueButton is an open-source virtual classroom. A denial-of-service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to crash the chat functionality for all participants in a meeting by sending a malformed `reactionEmojiId` in the GraphQL mutation `chatSendMessageReaction`. Version 3.0.13 contains a patch. No known workarounds are available.

PUBLISHED Reserved 2025-09-26 | Published 2025-10-09 | Updated 2025-10-10 | Assigner GitHub_M

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-703: Improper Check or Handling of Exceptional Conditions

Product status

< 3.0.13

affected

References

github.com/...button/security/advisories/GHSA-45j2-m26c-3pcm

github.com/bigbluebutton/bigbluebutton/pull/23651

cve.org (CVE-2025-61602)

nvd.nist.gov (CVE-2025-61602)

Download JSON