CVE-2026-46404

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

6.8 / 10

Vector String

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

Vulnerability Description

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not properly restrict access to site local and link local addresses. The redirect following logic now pins resolved IPs. This issue is fixed in version 3.0.23.

Vulnerability Details

Published Date

July 16, 2026

Last Modified

July 16, 2026

CWE ID

CWE-918

Source

NVD

Vendor

bigbluebutton

Product

bigbluebutton

External References

https://github.com/bigbluebutton/bigbluebutton/commit/7ccc60c965d744d9fb637715052352a1e59a2c27
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-xqm3-6q7q-4v5h

CVE-2026-46404

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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