CVE-2026-41321

{
  "id": "CVE-2026-41321",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-24T18:16:28.783",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "@astrojs/cloudflare is an SSR adapter for use with Cloudflare Workers targets. Prior to 13.1.10, the fetch() call for remote images in packages/integrations/cloudflare/src/utils/image-binding-transform.ts uses the default redirect: 'follow' behavior. This allows the Cloudflare Worker to follow HTTP redirects to arbitrary URLs, bypassing the isRemoteAllowed() domain allowlist check which only validates the initial URL. This vulnerabiity is caused by an incomplete fix for CVE-2025-58179. This vulnerability is fixed in 13.1.10."
    },
    {
      "lang": "es",
      "value": "@astrojs/cloudflare es un adaptador SSR para usar con objetivos de Cloudflare Workers. Antes de la versión 13.1.10, la llamada a fetch() para imágenes remotas en packages/integrations/cloudflare/src/utils/image-binding-transform.ts utiliza el comportamiento predeterminado redirect: ’follow’. Esto permite al Cloudflare Worker seguir redirecciones HTTP a URLs arbitrarias, eludiendo la comprobación de lista de permitidos de dominio isRemoteAllowed() que solo valida la URL inicial. Esta vulnerabilidad es causada por una corrección incompleta para CVE-2025-58179. Esta vulnerabilidad está corregida en la versión 13.1.10."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "withastro",
          "product": "@astrojs/cloudflare",
          "versions": [
            {
              "version": "< 13.1.10",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 2.2,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 0.7,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-24T18:27:06.347024Z",
          "id": "CVE-2026-41321",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "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/withastro/astro/security/advisories/GHSA-88gm-j2wx-58h6",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/withastro/astro/security/advisories/GHSA-88gm-j2wx-58h6",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}