Vulnerability Database

319,592

Total vulnerabilities in the database

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.

  • Published: Oct 9, 2025
  • Updated: Nov 16, 2025
  • CVE: CVE-2025-61602
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
bigbluebutton / bigbluebutton - 3.0.13