7.5

CVE-2025-61602

Medienbericht
Exploit

BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId

Chat DoS via invalid reactionEmojiId in BigBlueButton

Reacting to messages can make the chat unusable.

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.
Mögliche Gegenmaßnahme
Server: There are no workarounds. We recommend upgrading to a patched version of BigBlueButton.
Server: Install latest version
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
BigBlueButton ≫ BigBlueButton Version < 3.0.13
VulnDex Vulnerability Enrichment
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Weitere Schwachstelleninformationen
SystemBigBlueButton
≫
Produkt Server
Version < 3.0.13
SystemBigBlueButton
≫
Produkt Server
Version < 3.0.13
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.275
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-703 Improper Check or Handling of Exceptional Conditions

The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product.

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VulnDex Intel
Media Report
13.10.2025 12:27
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm
Vendor Advisory
Exploit
https://github.com/bigbluebutton/bigbluebutton/pull/23651
Patch
Issue Tracking
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm
Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-5m8m-h7fj-8wx6
Third Party Advisory