CVE-2025-61602

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...

CVE-2025-61601

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...

CVE-2025-55200

BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting XSS vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious...

CVE-2025-61601

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...

CVE-2025-61602

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...

CVE-2025-61602 BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId

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...

CVE-2025-61602 BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId

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...

EUVD-2025-33560

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...

CVE-2025-61602

BigBlueButton (open-source virtual classroom) has a DoS vulnerability in chat that allows an authenticated user to crash the chat for all participants by sending a malformed reactionEmojiId via the GraphQL mutation chatSendMessageReaction in versions prior to 3.0.13. Version 3.0.13 contains a pat...

CVE-2025-61602 BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId

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...

CVE-2025-61601

BigBlueButton has a DoS vulnerability (CVE-2025-61601) in versions prior to 3.0.13. The issue stems from mishandling the polling feature’s Choices response: sending a malicious payload with a massive answerIds array can freeze or crash the current meeting and potentially affect the server. A patc...

CVE-2025-61601 BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation

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...

CVE-2025-61601 BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation

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...

CVE-2025-61601 BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation

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...

EUVD-2025-33564

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...

CVE-2025-55200

BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting XSS vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious...

CVE-2025-55200

BigBlueButton has a Stored XSS vulnerability in the Shared Notes feature prior to version 3.0.13. The issue arises from unsafely handling the Username field, allowing a low-privilege user to inject arbitrary JavaScript that can execute in the context of higher-privileged users (e.g., Admins) who ...

EUVD-2025-33584

BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting XSS vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious...

CVE-2025-55200 BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes

BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting XSS vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious...

PT-2025-41489

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.13 Description BigBlueButton is an open-source virtual classroom. A Denial of Service DoS issue exists that allows any authenticated user to freeze or crash the server by abusing the polling feature's Choice...