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CVE-2025-59833

Estado: AnalizadaAlta (7.5)—

Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.1.0 to before 2.3.0, the API endpoint GET /api/problems/:id returns challenge hints in plaintext within the question object, regardless of whether the user has unlocked them via point deduction. Users can view all hints for free, undermining the business logic of the platform and reducing the integrity of the challenge system. This issue has been patched in version 2.3.0.

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.

API endpoint expuesto sin autenticación (AV:N, PR:N) divulga datos sensibles (hints) que deberían estar protegidos (CWE-200: Information Exposure). Acceso directo a información no autorizada.

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

Vulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Flagforge — Flagforge

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-59833",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-59833",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-09-24T20:41:55.963055Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "FlagForgeCTF",
          "product": "flagForge",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2.1.0, < 2.3.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-09-24T21:15:32.767",
  "references": [
    {
      "url": "https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-hm85-2j65-j8j2",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.1.0 to before 2.3.0, the API endpoint GET /api/problems/:id returns challenge hints in plaintext within the question object, regardless of whether the user has unlocked them via point deduction. Users can view all hints for free, undermining the business logic of the platform and reducing the integrity of the challenge system. This issue has been patched in version 2.3.0."
    },
    {
      "lang": "es",
      "value": "Flag Forge es una plataforma de Capture The Flag (CTF). En versiones desde la 2.1.0 hasta la 2.3.0, el endpoint de la API GET /api/problems/:id devuelve pistas de desafíos en texto plano dentro del objeto de la pregunta, independientemente de si el usuario las ha desbloqueado mediante deducción de puntos. Los usuarios pueden ver todas las pistas de forma gratuita, socavando la lógica de negocio de la plataforma y reduciendo la integridad del sistema de desafíos. Este problema ha sido parcheado en la versión 2.3.0."
    }
  ],
  "lastModified": "2026-06-17T09:46:47.340",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:flagforge:flagforge:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A394F21B-27D4-452D-81EF-94D4DBC4A70D",
              "versionEndExcluding": "2.3",
              "versionStartIncluding": "2.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}