CVE-2026-41130
Published: Apr 21, 2026
Modified: Apr 22, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
craftcms | cms | affected >= 5.0.0-RC1, < 5.9.15affected >= 4.0.0-RC1, < 4.17.9 |
Weaknesses (CWE)
References
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