CVE-2026-84479

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/WWBN/AVideo/security/advisories/GHSA-m9m3-gwh2-337c
https://www.vulncheck.com/advisories/wwbn-avideo-authentication-bypass-via-user-agent-header
https://github.com/WWBN/AVideo/security/advisories/GHSA-m9m3-gwh2-337c

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 23:17

Updated : 2026-09-08 20:18

NVD link : CVE-2026-84479

Mitre link : CVE-2026-84479

CVE.ORG link : CVE-2026-84479

JSON object : View

Products Affected

No product.

CWE

CWE-290

Authentication Bypass by Spoofing

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