Description

BigBlueButton is an open-source virtual classroom. In versions 3.0.19 and below, when first joining a session with the microphone muted, the client sends audio to the server regardless of mute state. Media is discarded at the server side, so it isn't audible to any participants, but this may allow for malicious server operators to access audio data. The behavior is only incorrect between joining the meeting and the first time the user unmutes. This issue has been fixed in version 3.0.20.

INFO

Published Date :

2026-02-21T07:18:26.156Z

Last Modified :

2026-02-24T18:49:12.218Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27467 vulnerability.

Vendors Products
Bigbluebutton
  • Bigbluebutton
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27467.

URL Resource
https://github.com/bigbluebutton/bigbluebutton/commit/3aa47832bc2b17178799bd932453c226e8f95703 cve-icon cve-icon
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-6gj9-5rhm-68j8 cve-icon cve-icon
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CVSS Vulnerability Scoring System

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