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CVE-2025-50900

Estado: AnalizadaCrítica (9.8)—

An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecode(request.getRequestURI()) to obtain the URL-decoded request path, and then determine whether the path endsWith /error. If so, execute return true to skip this Interceptor. Else, redirect to /user/login api. Allowing unauthenticated attackers to gain sensitive information or escalated privileges.

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.

Vulnerabilidad de bypass de autenticación en aplicación web expuesta (AV:N/AC:L/PR:N). Permite acceso no autenticado a /error y obtención de información sensible o escalada de privilegios. CWE-284: permisos inapropiados.

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

Password PoliciesApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability ScanningUser Training

Tecnologías afectadas (1)

Getrebuild — Rebuild

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-50900",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-50900",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-08-26T13:37:56.839081Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
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  ],
  "published": "2025-08-25T15:15:40.000",
  "references": [
    {
      "url": "https://racerz.notion.site/Rebuild-Vulnerability-1ede0e0074f280d8a906c38442a393f0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "url": "https://www.notion.so/racerz/Rebuild-Vulnerability-1ede0e0074f280d8a906c38442a393f0?pvs=4",
      "tags": [
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        "Third Party Advisory"
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      "source": "cve@mitre.org"
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "lang": "en",
          "value": "CWE-284"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecode(request.getRequestURI()) to obtain the URL-decoded request path, and then determine whether the path endsWith /error. If so, execute return true to skip this Interceptor. Else, redirect to /user/login api. Allowing unauthenticated attackers to gain sensitive information or escalated privileges."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en getrebuild/rebuild 4.0.4. La clase de código fuente afectada es com.rebuild.web.RebuildWebInterceptor y la función afectada es preHandle. En el código de filtro, use CodecUtils.urlDecode(request.getRequestURI()) para obtener la ruta de la solicitud decodificada por URL y, a continuación, determine si la ruta termina con /error. De ser así, ejecute `return true` para omitir este interceptor. De lo contrario, redirija a la API /user/login. Esto permite que atacantes no autenticados obtengan información confidencial o aumenten sus privilegios."
    }
  ],
  "lastModified": "2026-06-17T09:35:25.690",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:getrebuild:rebuild:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "407A7829-C7CF-4C50-AE1A-C625B59CE8DE",
              "versionEndIncluding": "4.0.4"
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          "operator": "OR"
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      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}