CVE-2026-41126 MEDIUM

CVE-2026-41126: BigBlueButton has Open Redirect through bigbluebutton/api/join via get-parameter "logoutURL"

Vendor Bigbluebutton
Product bigbluebutton
Weakness CWE-601 · Open redirect
Published April 21, 2026
Last update April 22, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
April 22, 2026 Record updated