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

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-27 · updated 2026-06-17
Weakness: CWE-269

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.

Affected products

bigbluebutton greenlight: before 2.12.6 — fixed in 2.12.6

How to fix

Upgrade to a fixed version: bigbluebutton greenlight 2.12.6. Check the vendor advisory for mitigations.

References

https://github.com/bigbluebutton/greenlight/pull/3508
https://github.com/bigbluebutton/greenlight/security/advisories/GHSA-phh8-3v6v-7498
https://github.com/bigbluebutton/greenlight/pull/3508
https://github.com/bigbluebutton/greenlight/security/advisories/GHSA-phh8-3v6v-7498

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