CVE-2026-41127 MEDIUM

CVE-2026-41127: BigBlueButton's missing authorization allows viewer to inject/overwrite captions

Vendor Bigbluebutton
Product bigbluebutton
Weakness CWE-639 · IDOR
Published April 21, 2026
Last update April 22, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

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

What the vulnerability does

01Description

BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available.

Key dates

02Disclosure timeline

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