CVE-2026-27467

LOW

2.0

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.

Details CVE

Score CVSS v3.12.0

SeveriteLOW

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisHIGH

Interaction utilisateurREQUIRED

Publie2/21/2026

Derniere modification2/26/2026

Sourcenvd

Observations honeypot0

Produits affectes

bigbluebutton:bigbluebutton

Faiblesses (CWE)

CWE-200

References

https://github.com/bigbluebutton/bigbluebutton/commit/3aa47832bc2b17178799bd932453c226e8f95703(security-advisories@github.com)

https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-6gj9-5rhm-68j8(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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