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CVE-2026-85577— AVideo userLogin.php Reflected XSS via error parameter

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 c91b5975d及之前版本存在跨站脚本漏洞，该漏洞源于userLogin.php对error参数处理不当，导致反射型跨站脚本漏洞，未经身份验证的攻击者可通过构造包含脚本逃逸序列的恶意URL，在登录页面受害者浏览器上下文中执行任意JavaScript。

CVSS 5.4 · Medium EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo ≤ c91b5975d affected
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I. Basic Information for CVE-2026-85577

Vulnerability Information
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Vulnerability Title
AVideo userLogin.php Reflected XSS via error parameter
Source: CVE Program / CVE List V5
Vulnerability Description
AVideo through commit c91b5975d contains a reflected cross-site scripting vulnerability in userLogin.php that allows unauthenticated attackers to inject arbitrary JavaScript by closing the script tag with </script>. Attackers can craft a malicious URL with an error parameter containing script breakout sequences to execute arbitrary JavaScript in the victim's browser context on the login page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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组织开源的一个视频分享与内容管理平台。 WWBN AVideo c91b5975d及之前版本存在跨站脚本漏洞，该漏洞源于userLogin.php对error参数处理不当，导致反射型跨站脚本漏洞，未经身份验证的攻击者可通过构造包含脚本逃逸序列的恶意URL，在登录页面受害者浏览器上下文中执行任意JavaScript。
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 ~ c91b5975d -

II. Public POCs for CVE-2026-85577

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III. Intelligence Information for CVE-2026-85577

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Vendor Advisories for CVE-2026-85577 (2)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-85577

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