CVE-2025-61601 - CVE House
Back to Database
Status published High CVE-2025-61601

BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-61601

Credits & Attribution

No credits recorded in the NVD database.

References

More from bigbluebutton

View All →
CVE-2025-61602
BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId
High 7.5
CVE-2025-55200
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
High 7.1
CVE-2024-39302
Some bbb-record-core files installed with wrong file permission
Low 3.7
CVE-2024-38518
bbb-web API additional parameters considered
Medium 4.6
CVE-2023-43798
BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)
Medium 5.6

Affected Vendor

bigbluebutton

View all reports →

Affected Software

bigbluebutton
Vulnerable Versions:
< 3.0.13

Timeline

Official Publish: October 9th, 2025
Last Modified: October 15th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-703

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.