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CVE-2026-40500— ProcessWire CMS SSRF via Add Module From URL

CVSS 6.8 · Medium EPSS 0.01% · P2
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I. Basic Information for CVE-2026-40500

Vulnerability Information
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Vulnerability Title
ProcessWire CMS SSRF via Add Module From URL
Source: NVD (National Vulnerability Database)
Vulnerability Description
ProcessWire CMS version 3.0.255 and prior contain a server-side request forgery vulnerability in the admin panel's 'Add Module From URL' feature that allows authenticated administrators to supply arbitrary URLs to the module download parameter, causing the server to issue outbound HTTP requests to attacker-controlled internal or external hosts. Attackers can exploit differentiable error messages returned by the server to perform reliable internal network port scanning, host enumeration across RFC-1918 ranges, and potential access to cloud instance metadata endpoints.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
ProcessWire CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ProcessWire CMS是ProcessWire开源的一个灵活的内容管理系统。 ProcessWire CMS 3.0.255及之前版本存在安全漏洞，该漏洞源于管理员面板的Add Module From URL功能存在服务端请求伪造问题，可能导致内部网络端口扫描、主机枚举或访问云实例元数据端点。
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
processwireprocesswire 0 ~ 3.0.255 -

II. Public POCs for CVE-2026-40500

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III. Intelligence Information for CVE-2026-40500

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Proof of Concept for CVE-2026-40500 (1)

IV. Related Vulnerabilities

Same weakness: CWE-918

V. Comments for CVE-2026-40500

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