CVE-2023-43798

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery SSRF. This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at httpclient.execute since the...

CVE-2022-31065

BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker whose username contains malicious JavaScript, the script gets...

CVE-2022-31039

Greenlight is a simple front-end interface for your BigBlueButton server. In affected versions an attacker can view any room's settings even though they are not authorized to do so. Only the room owner and administrator should be able to view a room's settings. This issue has been patched in...

CVE-2022-31064

BigBlueButton is an open source web conferencing system. Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions. The attack occurs when the attacker with xss in the name starts a chat. in the victim's client the JavaScript will be executed...

CVE-2022-27238

BigBlueButton version 2.4.7 or earlier is vulnerable to stored Cross-Site Scripting XSS in the private chat functionality. A threat actor could inject JavaScript payload in his/her username. The payload gets executed in the browser of the victim each time the attacker sends a private message to t...

CVE-2025-62781

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. Prior to 4.8.0, users with a local account can change their password while logged in. When doing so, all other active sessions are terminated, except for the currently active one. However, the current session’s...

CVE-2025-62781

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. Prior to 4.8.0, users with a local account can change their password while logged in. When doing so, all other active sessions are terminated, except for the currently active one. However, the current session’s...

EUVD-2025-36362

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. PILOS before 4.8.0 exposes the PHP version via the X-Powered-By header, enabling attackers to fingerprint the server and assess potential exploits. This information disclosure vulnerability originates from PHP’s...

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-2025-55200

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...

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 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 (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 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 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...