CVE-2026-41130

{
  "id": "CVE-2026-41130",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-22T00:16:28.880",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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. \nWhen `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."
    },
    {
      "lang": "es",
      "value": "Craft CMS es un sistema de gestión de contenido (CMS). En las versiones de la rama 4.x hasta la 4.17.8 y de la rama 5.x hasta la 5.9.14, el endpoint ’resource-js’ en Craft CMS permite peticiones no autenticadas para hacer proxy de recursos JavaScript remotos. Cuando ’trustedHosts’ no está explícitamente restringido (configuración por defecto), la aplicación confía en el encabezado Host proporcionado por el cliente. Esto permite a un atacante controlar la ’baseUrl’ derivada, que se utiliza en la validación de prefijos dentro de ’actionResourceJs()’. Al proporcionar un encabezado Host malicioso, el atacante puede hacer que el servidor emita peticiones HTTP arbitrarias, lo que lleva a la falsificación de petición del lado del servidor (SSRF). Las versiones 4.17.9 y 5.9.15 aplican un parche al problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "craftcms",
          "product": "cms",
          "versions": [
            {
              "version": ">= 5.0.0-RC1, < 5.9.15",
              "status": "affected"
            },
            {
              "version": ">= 4.0.0-RC1, < 4.17.9",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "LOW",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-22T14:18:44.834770Z",
          "id": "CVE-2026-41130",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/craftcms/cms/commit/ebe7e85f1c89700d64332f72492be2e9a594e783",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/craftcms/cms/security/advisories/GHSA-95wr-3f2v-v2wh",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/craftcms/cms/security/advisories/GHSA-95wr-3f2v-v2wh",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}