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 freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.
History

Mon, 20 Oct 2025 15:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

Wed, 15 Oct 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Oct 2025 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Bigbluebutton
Bigbluebutton bigbluebutton
Vendors & Products Bigbluebutton
Bigbluebutton bigbluebutton

Thu, 09 Oct 2025 20:45:00 +0000

Type Values Removed Values Added
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 freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.
Title BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation
Weaknesses CWE-703
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-10-09T20:29:25.006Z

Updated: 2025-10-15T19:47:14.421Z

Reserved: 2025-09-26T16:25:25.151Z

Link: CVE-2025-61601

cve-icon Vulnrichment

Updated: 2025-10-15T19:46:49.905Z

cve-icon NVD

Status : Analyzed

Published: 2025-10-09T21:15:39.477

Modified: 2025-10-20T15:33:21.023

Link: CVE-2025-61601

cve-icon Redhat

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