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CVE-2026-88866— WWBN AVideo LoginControl Stored XSS 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 在提交 c3edcc274c389816d434acadac07ee78eaf330c1 及之前的版本中，LoginControl 插件中存在一个存储型跨站脚本（Stored XSS）漏洞：该插件在将 User-Agent 头存储到登录历史记录之前，未对其进行编码。任何拥有有效登录账户的攻击者都可以在 User-Agent 头中注入恶意脚本，当管理员查看“登录历史”页面时，这些脚本会在管理员的浏览器中执行，从而在管理员会话中实现脚本执行。

CVSS 8.7 · High
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I. Basic Information for CVE-2026-88866

Vulnerability Information
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Vulnerability Title
WWBN AVideo LoginControl Stored XSS via User-Agent Header
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LoginControl plugin that fails to encode the User-Agent header before storing it in login history. Attackers with any valid login account can inject malicious scripts in the User-Agent header that execute in administrator browsers when viewing the Login History page, allowing script execution within the administrator session.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo 0 ~ c3edcc274c389816d434acadac07ee78eaf330c1 -

II. Public POCs for CVE-2026-88866

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III. Intelligence Information for CVE-2026-88866

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Vendor Advisories for CVE-2026-88866 (2)

Same Patch Batch · WWBN · 2026-09-10 · 12 CVEs total

CVE-2026-88869 9.3 CRITICAL AVideo AD_Server Stored XSS via log.php label parameter
CVE-2026-88867 8.7 HIGH WWBN AVideo Stored XSS via Category Name and Icon Class
CVE-2026-88868 8.7 HIGH AVideo LiveLinks Stored XSS via title and description fields
CVE-2026-88865 8.1 HIGH AVideo Missing Authorization via getRestream.json.php
CVE-2026-88876 7.5 HIGH AVideo PlayerSkins seo.php Missing Authorization Password-Protected VOD
CVE-2026-88874 7.5 HIGH AVideo through c3edcc274c389816d434acadac07ee78eaf330c1 Authentication Bypass
CVE-2026-88870 7.1 HIGH WWBN AVideo LoginControl PGP Key CSRF via GET Request
CVE-2026-88873 7.1 HIGH WWBN AVideo Cross-Site Request Forgery via logArchive.json.php
CVE-2026-88872 7.1 HIGH AVideo CustomizeUser setPassword.json.php CSRF
CVE-2026-88875 4.3 MEDIUM AVideo Incomplete API Sanitization Information Disclosure
CVE-2026-88871 4.3 MEDIUM WWBN AVideo CustomizeUser setSubscribers CSRF via GET

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-79

V. Comments for CVE-2026-88866

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