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High severity7.5NVD Advisory· Published Oct 9, 2025· Updated Jun 17, 2026

CVE-2025-61602

CVE-2025-61602

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Bigbluebutton/Bigbluebutton3 versions
    cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*range: <3.0.13
    • (no CPE)range: <3.0.13
    • (no CPE)range: < 3.0.13

Patches

Vulnerability mechanics

References

2

News mentions

0

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