Craft CMS has a host header injection leading to SSRF via resource-js endpoint

Craft CMS is a content management system (CMS). In versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14, the `resource-js` endpoint in Craft CMS allows unauthenticated requests to proxy remote JavaScript resources. When `trustedHosts` is not explicitly restricted (default configuration), the application trusts the client-supplied Host header. This allows an attacker to control the derived `baseUrl`, which is used in prefix validation inside `actionResourceJs()`. By supplying a malicious Host header, the attacker can make the server issue arbitrary HTTP requests, leading to Server-Side Request Forgery (SSRF). Versions 4.17.9 and 5.9.15 patch the issue.

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服务端请求伪造(SSRF)

Craft CMS 代码问题漏洞

Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS存在代码问题漏洞，该漏洞源于resource-js端点允许未经身份验证的请求代理远程JavaScript资源，当trustedHosts未明确限制时，攻击者可通过恶意Host标头导致服务端请求伪造。

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