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CVE-2026-116139— WWBN AVideo 26.0 through 29.3.0 Stored XSS via Comment Markdown Rendering

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 26.0 至 29.3.0 版本存在存储型跨站脚本（XSS）漏洞。由于 函数在开头的 HTML 块中保留了事件处理程序属性，已认证的评论者可以注入 JavaScript 代码。攻击者可以发布以带有 处理程序的 标签开头的评论，从而绕过内联内容清理机制，并在应用源上下文中于浏览器的环境中执行恶意脚本。

CVSS 5.4 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo 26.0≤ 29.3.0 affected
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I. Basic Information for CVE-2026-116139

Vulnerability Information
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Vulnerability Title
WWBN AVideo 26.0 through 29.3.0 Stored XSS via Comment Markdown Rendering
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers can post a comment starting with an img tag carrying an onerror handler, which bypasses the inline sanitizer and executes in viewers' browsers under the application origin.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo 26.0 ~ 29.3.0 -

II. Public POCs for CVE-2026-116139

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III. Intelligence Information for CVE-2026-116139

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Patches & Fixes for CVE-2026-116139 (1)

Vendor Advisories for CVE-2026-116139 (2)

IV. Related Vulnerabilities

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