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CVE-2026-84479— WWBN AVideo Authentication Bypass via User-Agent Header

Quick assessment

Affected
WWBN AVideo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WWBN AVideo是WWBN组织开源的一个视频分享与内容管理平台。 WWBN AVideo 29.0及之前版本存在授权问题漏洞，该漏洞源于登录时的三个安全控制仅依赖客户端提供的User-Agent头，isAVideoEncoder()/isAVideoMobileApp()检查使用硬编码字面量匹配且无IP检查或共享密钥，可能导致攻击者提交有效凭据并设置User-Agent为AVideoEncoder后绕过双因素认证、跳过暴力破解验证码升级并避免记录在登录/设备审计历史中。

CVSS 9.1 · Critical EPSS 0.55% · P45

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo ≤ 29.0 affected
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I. Basic Information for CVE-2026-84479

Vulnerability Information
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Vulnerability Title
WWBN AVideo Authentication Bypass via User-Agent Header
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
WWBN AVideo 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WWBN AVideo是WWBN组织开源的一个视频分享与内容管理平台。 WWBN AVideo 29.0及之前版本存在授权问题漏洞，该漏洞源于登录时的三个安全控制仅依赖客户端提供的User-Agent头，isAVideoEncoder()/isAVideoMobileApp()检查使用硬编码字面量匹配且无IP检查或共享密钥，可能导致攻击者提交有效凭据并设置User-Agent为AVideoEncoder后绕过双因素认证、跳过暴力破解验证码升级并避免记录在登录/设备审计历史中。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo 0 ~ 29.0 -

II. Public POCs for CVE-2026-84479

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-84479

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Vendor Advisories for CVE-2026-84479 (2)

Same Patch Batch · WWBN · 2026-09-01 · 11 CVEs total

CVE-2026-84480 9.8 CRITICAL WWBN AVideo Password Recovery Token Expiration Bypass
CVE-2026-84482 8.8 HIGH WWBN AVideo Cross-Site Request Forgery via get_domain() validation
CVE-2026-84187 8.2 HIGH AVideo on_publish.php Missing Authentication Check via RTMP Callback
CVE-2026-83595 8.1 HIGH AVideo Cross-Site Request Forgery via plugin/API/set.json.php
CVE-2026-84208 7.5 HIGH AVideo User_Location Plugin Unauthenticated SQL Injection
CVE-2026-84476 7.5 HIGH WWBN AVideo Authentication Bypass via X-Real-IP Header
CVE-2026-84478 7.3 HIGH WWBN AVideo Unauthenticated Arbitrary Log File Deletion
CVE-2026-84481 6.9 MEDIUM WWBN AVideo through 30.0 Information Disclosure via MobileManager
CVE-2026-84477 5.4 MEDIUM AVideo Stored XSS via Live Schedule Title Description
CVE-2026-84483 5.3 MEDIUM WWBN AVideo Unauthenticated Password Hash Oracle via encryptPass.json.php

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-290

V. Comments for CVE-2026-84479

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