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CVE-2025-61602: bigbluebutton before 3.0.13 (exclusive), < 3.0.13
CVE-2025-61602. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.00393 (percentile 0.31918), scored 19-Oct-2026.
Affected technology
bigbluebutton · before 3.0.13 (exclusive)
bigbluebutton
bigbluebutton · < 3.0.13
bigbluebutton
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Any authenticated user can crash the chat functionality for all participants in a meeting by sending a malformed `reactionEmojiId` in the GraphQL mutation `chatSendMessageReaction`. Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.
- CWE
- CWE-703
- CCR priority
- 30.1 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
- EPSS
- 0.00393 · percentile 0.31918 · 2026-10-19
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-19 17:57:47.606446+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2025-61602.html