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OpenAdvisories
Medium WID-SEC-2025-2248 3 CVEs

BigBlueButton: Mehrere Schwachstellen

Published Oct 9, 2025 · Updated Oct 9, 2025 · de-DE

Summary

Ein entfernter, authentisierter oder anonymer Angreifer kann mehrere Schwachstellen in BigBlueButton ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen oder einen Denial-of-Service-Zustand zu verursachen.

Product

BigBlueButton ist ein Open-Source-Web-Konferenzsystem.

Vulnerabilities 3

  • High 7.5
    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…

    bigbluebutton bigbluebutton
  • High 7.5
    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 …

    bigbluebutton bigbluebutton
  • High 7.1
    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 Not…

    bigbluebutton bigbluebutton

Revision history

  1. #1

    Initiale Fassung

References