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CVE-2026-50183— WWBN AVideo: Stored XSS via Hostile YouTube Video Title in AVideo YouTubeAPI Gallery Section

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组织开源的一套视频内容管理系统。 WWBN AVideo 29.0及之前版本存在跨站脚本漏洞，该漏洞源于YouTubeAPI插件中未对Youtube Data API返回的snippet.title字段进行HTML编码，导致存在存储型跨站脚本漏洞，可能允许攻击者注入JavaScript代码，当管理员访问时可能导致账户接管。

CVSS 4.7 · Medium EPSS 0.26% · P16

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo <= 29.0 affected
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I. Basic Information for CVE-2026-50183

Vulnerability Information
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Vulnerability Title
WWBN AVideo: Stored XSS via Hostile YouTube Video Title in AVideo YouTubeAPI Gallery Section
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo is an open source video platform. Versions 29.0 and below contain a stored Cross-Site Scripting vulnerability in the YouTubeAPI plugin. The plugin renders the snippet.title field returned by the YouTube Data API into the homepage gallery markup with no HTML encoding. The title is set by the YouTube video uploader (anyone in the world) and is treated by AVideo as trusted content. A YouTube uploader who controls a video matching the operator's configured query injects HTML into the AVideo homepage by setting their video's title to a JavaScript-bearing string; the payload then executes in the browser of every visitor who loads any page that renders the gallery. When the visitor is an AVideo administrator, the injected JavaScript performs any admin action (create user, promote to admin, change configuration, install plugin) that uses cookie-based authentication without an additional CSRF token, escalating the bug into full administrative takeover. The payload persists for the duration of cacheTimeout (default 3600 seconds) after the malicious title is set on YouTube and survives YouTube removing the hostile video for the same window. This issue has been addressed by commit https://github.com/WWBN/AVideo/commit/7292129eaee5f609beae103b5cb387d55f17b877.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/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
Vulnerability Title
WWBN AVideo 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WWBN avideo是WWBN组织开源的一套视频内容管理系统。 WWBN AVideo 29.0及之前版本存在跨站脚本漏洞，该漏洞源于YouTubeAPI插件中未对Youtube Data API返回的snippet.title字段进行HTML编码，导致存在存储型跨站脚本漏洞，可能允许攻击者注入JavaScript代码，当管理员访问时可能导致账户接管。
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 <= 29.0 -

II. Public POCs for CVE-2026-50183

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III. Intelligence Information for CVE-2026-50183

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Patches & Fixes for CVE-2026-50183 (1)

Vendor Advisories for CVE-2026-50183 (1)

Same Patch Batch · WWBN · 2026-07-15 · 5 CVEs total

CVE-2026-54458 9.6 CRITICAL AVideo: Unauthenticated Stored DOM Cross-Site Scripting via Per-Client Metadata Broadcast
CVE-2026-50182 6.1 MEDIUM AVideo Has Unauthenticated Reflected XSS via $_GET['search'] in YouTubeAPI Gallery Paginat
CVE-2026-33684 5.3 MEDIUM AVideo's Privilege AVideo: Escalation via Unguarded Permission Parameters in signUp API Al
CVE-2026-49279 WWBN AVideo: Stored XSS via autoEvalCodeOnHTML Bypass in MessageSQLite WebSocket Handler (

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-50183

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