VulnerabilityDeferred

CVE-2026-41126

BigBlueButton is an open-source virtual classroom.

MEDIUM 4.3EPSS 0.23%

Does this matter?

Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.

Description

BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have an Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL." Version 3.0.24 has adjusted the handling of requests with incorrect checksum so that the default logoutURL is used. No known workarounds are available.

CVSS 3.1: 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS: 0.23% probability · 14th percentile
CISA KEV: Not listed
Weakness: CWE-601
Source: security-advisories@github.com

References

https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-cvwj-4pcp-f3g8

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.