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CVE-2018-15133

Estado: AnalizadaAlta (8.1)⚠ Explotación activa💥 Exploit

En Laravel Framework hasta la versión 5.5.40 y versiones 5.6.x hasta la 5.6.29, podría ocurrir una ejecución remota de código como resultado de una llamada unserialize en un valor X-XSRF-TOKEN que podría no ser fiable. Esto está relacionado con el método decrypt en Illuminate/Encryption/Encrypter.php y PendingBroadcast en gadgetchains/Laravel/RCE/3/chain.php en phpggc. Le atacante debe conocer la clave de la aplicación, algo que normalmente nunca sucedería, pero podría pasar si el atacante tuviese acceso privilegiado o lograse de forma exitosa un ataque anterior.

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).

CISA KEV — explotada activamente

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

🎯 Técnicas ATT&CK

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

RCE por deserialización insegura en X-XSRF-TOKEN (CWE-502), requiere clave conocida. AV:N sin privilegios, ejecución remota de código confirmada. Acceso a datos via gadget chains.

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

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Laravel — Laravel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-15133",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2018-15133",
          "role": "CISA Coordinator",
          "options": [
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            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2024-01-17T18:05:27.931922Z"
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    "cvssMetricV31": [
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  "affected": [
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            }
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      ]
    }
  ],
  "published": "2018-08-09T19:29:00.333",
  "references": [
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    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-15133",
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      ],
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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        }
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    },
    {
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      "description": [
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    }
  ],
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    {
      "lang": "en",
      "value": "In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack."
    },
    {
      "lang": "es",
      "value": "En Laravel Framework hasta la versión 5.5.40 y versiones 5.6.x hasta la 5.6.29, podría ocurrir una ejecución remota de código como resultado de una llamada unserialize en un valor X-XSRF-TOKEN que podría no ser fiable. Esto está relacionado con el método decrypt en Illuminate/Encryption/Encrypter.php y PendingBroadcast en gadgetchains/Laravel/RCE/3/chain.php en phpggc. Le atacante debe conocer la clave de la aplicación, algo que normalmente nunca sucedería, pero podría pasar si el atacante tuviese acceso privilegiado o lograse de forma exitosa un ataque anterior."
    }
  ],
  "lastModified": "2026-06-17T01:42:06.387",
  "cisaActionDue": "2024-02-06",
  "cisaExploitAdd": "2024-01-16",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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  "sourceIdentifier": "cve@mitre.org",
  "cisaRequiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Laravel Deserialization of Untrusted Data Vulnerability"
}