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.

INFO

Published Date :

2025-10-09T20:40:04.658Z

Last Modified :

2025-10-10T14:30:50.944Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-61602 vulnerability.

Vendors Products
Bigbluebutton
  • Bigbluebutton
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-61602.

URL Resource
https://github.com/bigbluebutton/bigbluebutton/pull/23651 cve-icon cve-icon
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact