CVE-2022-36029: BigBlueButton Greenlight Open Redirect vulnerability

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-04-25 · updated 2026-06-17
Weakness: CWE-601

Description

Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.

Affected products

bigbluebutton greenlight: before 2.13.0 — fixed in 2.13.0

How to fix

Upgrade to a fixed version: bigbluebutton greenlight 2.13.0. Check the vendor advisory for mitigations.

References

https://github.com/bigbluebutton/greenlight/commit/20fe1ee71b5703fcc4ed698a959ad224fed19623
https://huntr.com/bounties/ba5834bd-1f04-4936-8e93-2442d45403bahttps://
https://github.com/bigbluebutton/greenlight/commit/20fe1ee71b5703fcc4ed698a959ad224fed19623
https://huntr.com/bounties/ba5834bd-1f04-4936-8e93-2442d45403bahttps://

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