CVE-2026-41127

MEDIUM

BigBlueButton's missing authorization allows viewer to inject/overwrite captions

Title source: cna
STIX 2.1

Description

BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available.

References (1)

Scores

CVSS v3 6.5
EPSS 0.0002
EPSS Percentile 6.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (1)
bigbluebutton/bigbluebutton < 3.0.24
Published Apr 22, 2026
Tracked Since Apr 22, 2026