Improper access control in BigBlueButton - CVE-2022-29235
Published: June 1, 2022 / Updated: May 14, 2026
Vulnerability identifier: #VU131448
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-29235
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose limited information about a shared external video.
The vulnerability exists due to improper access control in the external video data stream when obtaining a meeting identifier for a meeting on the server. A remote attacker can access information such as the current timestamp and play or pause state to disclose limited information about a shared external video.
Affected software
BigBlueButton
How to mitigate CVE-2022-29235
Install security update from vendor's website.
BigBlueButton - addressed in versions 2.3.18, 2.4 rc-6