CVE-2026-46404

Medium

Open

TLP:CLEAR

BigBlueButton: Presentation URL Security Hardening

NVD CVE.org

Critical Infrastructure

AI Analysis

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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.

Details

CVSS Score: 6.8
EPSS Score ⓘ: 0.26%

17.2th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Confidence: 90%
Published: Jul 16, 2026
Last Modified: Jul 17, 2026

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