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CVE-2025-53528

Estado: AplazadaAlta (7.6)—

Cadwyn creates production-ready community-driven modern Stripe-like API versioning in FastAPI. In versions before 5.4.3, the version parameter of the "/docs" endpoint is vulnerable to a Reflected XSS (Cross-Site Scripting) attack. This XSS would notably allow an attacker to execute JavaScript code on a user's session for any application based on Cadwyn via a one-click attack. The vulnerability has been fixed in version 5.4.3.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

XSS reflejado en parámetro 'version' del endpoint '/docs' permite ejecutar JavaScript en navegador del usuario via enlace malicioso (CWE-79, UI:R, ataque de un clic).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict Web-Based ContentUser TrainingExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (2)

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

Cadwyn — CadwynAITiangolo — FastapiAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-53528",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-53528",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-07-22T19:55:33.509222Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "zmievsa",
          "product": "cadwyn",
          "versions": [
            {
              "status": "affected",
              "version": "< 5.4.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-07-21T21:15:25.883",
  "references": [
    {
      "url": "https://github.com/zmievsa/cadwyn/commit/b424ecd57cd8dabbc8fe39b8f8ccafea629c7728",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/zmievsa/cadwyn/security/advisories/GHSA-2gxp-6r36-m97r",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
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  "descriptions": [
    {
      "lang": "en",
      "value": "Cadwyn creates production-ready community-driven modern Stripe-like API versioning in FastAPI. In versions before 5.4.3, the version parameter of the \"/docs\" endpoint is vulnerable to a Reflected XSS (Cross-Site Scripting) attack. This XSS would notably allow an attacker to execute JavaScript code on a user's session for any application based on Cadwyn via a one-click attack. The vulnerability has been fixed in version 5.4.3."
    },
    {
      "lang": "es",
      "value": "Cadwyn crea un control de versiones de API moderno, similar a Stripe, basado en la comunidad y listo para producción en FastAPI. En las versiones 5.4.3 y anteriores, el parámetro de versión del endpoint \"/docs\" es vulnerable a un ataque XSS reflejado (Cross-Site Scripting). Este XSS permitiría a un atacante ejecutar código JavaScript en la sesión de un usuario para cualquier aplicación basada en Cadwyn mediante un ataque de un solo clic. La vulnerabilidad se ha corregido en la versión 5.4.4."
    }
  ],
  "lastModified": "2026-06-17T09:38:23.330",
  "sourceIdentifier": "security-advisories@github.com"
}