CVE-2022-31039 Improper privilege management - Anyone can view room settings in GreenLight

Medium 4.3 Published 27 Jun 2022 Updated 23 Apr 2025

Attackers can view unauthorized room settings in GreenLight, exposing sensitive configuration data to unprivileged users.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-31039?

CVE-2022-31039 is a medium-severity missing authorization vulnerability in bigbluebutton greenlight, published on 27 Jun 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Greenlight is a simple front-end interface for your BigBlueButton server. In affected versions an attacker can view any room's settings even though they are not authorized to do so. Only the room owner and administrator should be able to view a room's settings. This issue has been patched in release version 2.12.6.

Weakness: CWE-863, CWE-269

Which versions are affected by CVE-2022-31039?

It affects 1 product.

Products include Bigbluebutton Greenlight.

How do I fix CVE-2022-31039?

No fix has been published for CVE-2022-31039 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2022-31039 being exploited?

There is no known exploitation of CVE-2022-31039 in the wild and no public exploit code.

Sources

Also known as GHSA-phh8-3v6v-7498.