BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation_CVE-2025-61601

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Basic Information

ID CVE-2025-61601

Source GitHub_M

Published Oct 9, 2025 at 20:29

Affected Product

Vendor bigbluebutton

Product bigbluebutton

Version < 3.0.13

Affected Versions bigbluebutton bigbluebutton < 3.0.13

CWE Classification

CWE-703

References

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    "published": "2025-10-09T20:29:25.006Z",
    "modified": "2025-10-09T20:29:25.006Z",
    "type": "cve",
    "title": "BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation",
    "source": "GitHub_M",
    "references": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5\nhttps://github.com/bigbluebutton/bigbluebutton/pull/23662\nhttps://www.youtube.com/watch?v=BwROSVIYjOY",
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