CVE-2026-41127

Medium

Description

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductBigbluebutton

PublishedApr 22, 2026

First seenApr 22, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
bigbluebutton bigbluebutton	< 3.0.24	—

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