Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-61602

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.8%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2025-61602


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