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.
References
| Link | Resource |
|---|---|
| https://github.com/bigbluebutton/bigbluebutton/pull/23651 | Issue Tracking Patch |
| https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm | Exploit Vendor Advisory |
| https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm | Exploit Vendor Advisory |
Configurations
History
20 Oct 2025, 15:36
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Bigbluebutton
Bigbluebutton bigbluebutton |
|
| References | () https://github.com/bigbluebutton/bigbluebutton/pull/23651 - Issue Tracking, Patch | |
| References | () https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm - Exploit, Vendor Advisory | |
| CPE | cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:* |
10 Oct 2025, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm - |
09 Oct 2025, 21:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-09 21:15
Updated : 2025-10-20 15:36
NVD link : CVE-2025-61602
Mitre link : CVE-2025-61602
CVE.ORG link : CVE-2025-61602
JSON object : View
Products Affected
bigbluebutton
- bigbluebutton
CWE
CWE-703
Improper Check or Handling of Exceptional Conditions