CVE-2026-55791

Craft CMS vulnerability CVE-2026-55791 enables SSRF and Arbitrary JavaScript Injection via /actions/app/resource-js when assetManager.cacheSourcePaths is false and trustedHosts is permissive. An attacker can poison Host/X-Forwarded-Host to hijack $baseUrl, causing Craft::createGuzzleClient()->...

Craft CMS: Blind SSRF and Arbitrary JavaScript Injection via Host Header Poisoning in actionResourceJs

Overview Craft CMS is vulnerable to Server-Side Request Forgery SSRF and Arbitrary JavaScript Injection through the /actions/app/resource-js endpoint. By exploiting the default permissive trustedHosts configuration, an attacker can poison the Host or X-Forwarded-Host header to manipulate the...

PT-2026-51113

Name of the Vulnerable Software and Affected Versions Craft CMS versions 4.0.0-RC1 through 4.17.9 Craft CMS versions 5.0.0-RC1 through 5.9.9 Description Craft CMS is subject to Server-Side Request Forgery SSRF and Arbitrary JavaScript Injection via the '/actions/app/resource-js' endpoint. The iss...

CVE-2026-41130

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...

CVE-2026-41130

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...