Vulnerabilities
Projects
Vulnerability Disclosure
About Us
Contact Us
Mend.io Vulnerability Database
What is a CVE vulnerability ID? 
What is a WS vulnerability ID?
What is an MSC vulnerability ID?
New vulnerability? Tell us about it!
What is a WS vulnerability ID?
What is an MSC vulnerability ID?
We found results for “”
CVE-2025-61602
Good to know:
Date: October 9, 2025
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.
Severity Score
Severity Score
Weakness Type (CWE)
Improper Check or Handling of Exceptional Conditions
CWE-703Top Fix
Upgrade Version
Upgrade to version https://github.com/bigbluebutton/bigbluebutton.git - v3.0.13
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | HIGH |