Medium severity6.8NVD Advisory· Published Jul 16, 2026· Updated Jul 17, 2026

CVE-2026-46404

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.

Affected products

Bigbluebutton/Bigbluebuttonllm-fuzzy
Range: <3.0.23

Patches

Vulnerability mechanics

References

github.com/bigbluebutton/bigbluebutton/commit/7ccc60c965d744d9fb637715052352a1e59a2c27nvd
github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-xqm3-6q7q-4v5hnvd

News mentions

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cvss	0.442
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000