CVE-2026-84479

Critical

Description

WWBN AVideo (current e01e41ecc and earlier) makes three login-time security controls depend solely on the client-supplied User-Agent header. The isAVideoEncoder()/isAVideoMobileApp() checks match HTTP_USER_AGENT against a hardcoded literal ("AVideoEncoder"/"AVideoMobileApp") with no IP check or shared secret. An attacker who submits valid credentials and sets User-Agent: AVideoEncoder bypasses two-factor authentication, skips brute-force captcha escalation, and avoids being recorded in the login/device audit history. No patch is available at the time of publication.

SeverityCritical
CVSS9.1
Exploit probability—
ProductAVideo
PublishedSep 1, 2026
First seenSep 1, 2026
Weakness typeCWE-290CWE-290

How to fix

Affected products

ProductAffected versionsFixed in
WWBN AVideov ≤ 29.0—

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CVE-2026-84479 · AVideo · Dark Radar