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CVE-2025-61602

nvd nist
Published: Oct 9, 2025Modified: Oct 20, 2025

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Bigbluebutton
1 product
Bigbluebutton
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Bigbluebutton
Before 3.0.13

Related CWEs

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.

References (3)

Source: security-advisories@github.com
Issue TrackingPatch
Source: security-advisories@github.com
ExploitVendor Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
ExploitVendor Advisory

Timeline

No history available yet.