VULNERABILITY INTELLIGENCE

CVE-2026-46404

CVSS score6.8 MEDIUM

EPSS probability0.43%

CISA KEVNot currently listed

Published2026-07-16

Last modified2026-07-17

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.