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CVE-2026-88871— WWBN AVideo CustomizeUser setSubscribers CSRF via GET

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 c3edcc274c389816d434acadac07ee78eaf330c1及之前版本存在跨站请求伪造漏洞，该漏洞源于CustomizeUser插件的plugin/CustomizeUser/setSubscribers.json.php端点对参数users_id和ExtraSubscribers处理不当，未要求POST请求或有效CSRF令牌，导致跨站请求伪造，攻击者可诱导已登录管理员加载特制页面伪造任意用

CVSS 4.3 · Medium EPSS 0.18% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
WWBN AVideo ≤ c3edcc274c389816d434acadac07ee78eaf330c1 affected
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I. Basic Information for CVE-2026-88871

Vulnerability Information
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Vulnerability Title
WWBN AVideo CustomizeUser setSubscribers CSRF via GET
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 (master, 2026-08-23) contains a cross-site request forgery vulnerability in the CustomizeUser plugin's plugin/CustomizeUser/setSubscribers.json.php endpoint. The script reads users_id and ExtraSubscribers from $_REQUEST and calls User::setExtraSubscribers() without requiring a POST request or a valid CSRF token; autoCSRFGuard() is applied only to POST requests to *.json.php, and the mutation does not pass through ObjectYPT::save()/isUntrustedRequest(), so a cross-origin GET succeeds. An unauthenticated remote attacker who induces a logged-in administrator to load a crafted page (for example an <img> tag pointing at the endpoint) can forge the ExtraSubscribers count displayed on any user's channel. The CustomizeUser plugin is enabled by default, and no patched version was available at the time of reporting.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
WWBN AVideo 跨站请求伪造漏洞
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 c3edcc274c389816d434acadac07ee78eaf330c1及之前版本存在跨站请求伪造漏洞，该漏洞源于CustomizeUser插件的plugin/CustomizeUser/setSubscribers.json.php端点对参数users_id和ExtraSubscribers处理不当，未要求POST请求或有效CSRF令牌，导致跨站请求伪造，攻击者可诱导已登录管理员加载特制页面伪造任意用
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 ~ c3edcc274c389816d434acadac07ee78eaf330c1 -

II. Public POCs for CVE-2026-88871

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III. Intelligence Information for CVE-2026-88871

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Vendor Advisories for CVE-2026-88871 (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-2026-88866 8.7 HIGH WWBN AVideo LoginControl Stored XSS via User-Agent Header
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

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-352