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CVE-2025-23221

Estado: AplazadaMedia (5.4)—

Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. This vulnerability allows a user to maneuver the Webfinger mechanism to perform a GET request to any internal resource on any Host, Port, URL combination regardless of present security mechanisms, and forcing the victim’s server into an infinite loop causing Denial of Service. Moreover, this issue can also be maneuvered into performing a Blind SSRF attack. This vulnerability is fixed in 1.0.14, 1.1.11, 1.2.11, and 1.3.4.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Fedify — FedifyAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-23221",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-23221",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-01-21T14:49:38.059073Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "dahlia",
          "product": "fedify",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.0.14"
            },
            {
              "status": "affected",
              "version": ">= 1.1.0, < 1.1.11"
            },
            {
              "status": "affected",
              "version": ">= 1.2.0, < 1.2.11"
            },
            {
              "status": "affected",
              "version": ">= 1.3.0, < 1.3.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-01-20T17:15:07.987",
  "references": [
    {
      "url": "https://github.com/dahlia/fedify/commit/8be3c2038eebf4ae12481683a1e809b314be3151",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/dahlia/fedify/commit/c505eb82fcd6b5b17174c6659c29721bc801ab9a",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/dahlia/fedify/commit/e921134dd5097586e4563ea80b9e8d1b5460a645",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/dahlia/fedify/security/advisories/GHSA-c59p-wq67-24wx",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. This vulnerability allows a user to maneuver the Webfinger mechanism to perform a GET request to any internal resource on any Host, Port, URL combination regardless of present security mechanisms, and forcing the victim’s server into an infinite loop causing Denial of Service. Moreover, this issue can also be maneuvered into performing a Blind SSRF attack. This vulnerability is fixed in 1.0.14, 1.1.11, 1.2.11, and 1.3.4."
    },
    {
      "lang": "es",
      "value": "Fedify es una librería de TypeScript para crear aplicaciones de servidor federado basadas en ActivityPub y otros estándares. Esta vulnerabilidad permite a un usuario manipular el mecanismo Webfinger para realizar una solicitud GET a cualquier recurso interno en cualquier combinación de host, puerto y URL, independientemente de los mecanismos de seguridad actuales, y obligar al servidor de la víctima a entrar en un bucle infinito que provoca una denegación de servicio. Además, este problema también se puede manipular para realizar un ataque SSRF ciego. Esta vulnerabilidad se ha corregido en 1.0.14, 1.1.11, 1.2.11 y 1.3.4."
    }
  ],
  "lastModified": "2026-06-17T08:52:45.360",
  "sourceIdentifier": "security-advisories@github.com"
}