CVE-2026-46404

—

CVSS 3.1

6.8 medium

EPSS

<1%p37

Published

Jul 16, 2026 (Jul 16, 2026)

Modified

Jul 17, 2026

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.

Weakness: CWE-918
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.4%)

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