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CVE-2026-3718— ManageWP Worker <= 4.9.31 - Unauthenticated Stored Cross-Site Scripting via 'MWP-Key-Name' Header

CVSS 7.2 · High EPSS 0.10% · P27

Possible ATT&CK Techniques 1AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProductVersion RangeStatus
managewpManageWP Worker≤ 4.9.31affected
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I. Basic Information for CVE-2026-3718

Vulnerability Information
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Vulnerability Title
ManageWP Worker <= 4.9.31 - Unauthenticated Stored Cross-Site Scripting via 'MWP-Key-Name' Header
Source: NVD (National Vulnerability Database)
Vulnerability Description
The ManageWP Worker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'MWP-Key-Name' HTTP request header in all versions up to, and including, 4.9.31. This is due to insufficient input sanitization and output escaping of attacker-controlled header values. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator visits the plugin's connection management page with debug parameters.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin ManageWP Worker 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin ManageWP Worker 4.9.31及之前版本存在跨站脚本漏洞，该漏洞源于对攻击者控制标头值的输入清理和输出转义不足，可能导致未经身份验证的攻击者在页面中注入任意Web脚本，当管理员访问插件连接管理页面时执行
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

VendorProductAffected VersionsCPESubscribe
managewpManageWP Worker 0 ~ 4.9.31 -

II. Public POCs for CVE-2026-3718

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III. Intelligence Information for CVE-2026-3718

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Patches & Fixes for CVE-2026-3718 (1)

Vendor Advisories for CVE-2026-3718 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-3718

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