CVE-2025-12739

Estado: AplazadaAlta (7.3)—

An attacker with viewer permissions in Looker could craft a malicious URL that, when opened by a Looker admin, would execute an attacker-supplied script. Exploitation required at least one Looker extension installed on the instance.

Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted instances. No user action is required for these.

Detalles técnicos trazas, registros y código del informe original

Self-hosted instances must be upgraded as soon as possible. This vulnerability has been patched in all supported versions of Self-hosted.
The versions below have all been updated to protect from this vulnerability. You can download these versions at the Looker download page  https://download.looker.com/ :  *  24.18.201+
  *  25.0.79+
  *  25.6.66+
  *  25.12.7+
  *  25.16.0+
  *  25.18.0+
  *  25.20.0+

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Red
Puntuación base: 7.3

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.31%
Percentil entre todas las CVEs puntuadas: 21
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1189 Drive-by Compromiseinitial access95 %
Impacto principalT1059.007 JavaScriptexecution90 %
Impacto secundarioT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access75 %

XSS en URL maliciosa (CWE-79) ejecuta script en navegador del admin. Requiere interacción (abrir URL) y extensión instalada. Acceso inicial con permisos de viewer, impacto de ejecución JavaScript en contexto autenticado de administrador.

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 Content User Training Password Policies Multi-factor Authentication Execution Prevention Behavior Prevention on Endpoint

Tecnologías afectadas (1)

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

Google — Looker^AI

CWE

CWE-79

Referencias

https://cloud.google.com/support/bulletins#gcp-2025-068

JSON original (NVD)

Mostrar

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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2025-11-24T10:15:59.567",
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      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c"
    }
  ],
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      "description": [
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    {
      "lang": "en",
      "value": "An attacker with viewer permissions in Looker could craft a malicious URL that, when opened by a Looker admin, would execute an attacker-supplied script. Exploitation required at least one Looker extension installed on the instance.\n\nLooker-hosted and Self-hosted were found to be vulnerable.\nThis issue has already been mitigated for Looker-hosted instances. No user action is required for these.\n\n\nSelf-hosted instances must be upgraded as soon as possible. This vulnerability has been patched in all supported versions of Self-hosted.\nThe versions below have all been updated to protect from this vulnerability. You can download these versions at the Looker download page  https://download.looker.com/ :  *  24.18.201+\n  *  25.0.79+\n  *  25.6.66+\n  *  25.12.7+\n  *  25.16.0+\n  *  25.18.0+\n  *  25.20.0+"
    }
  ],
  "lastModified": "2026-06-17T08:32:52.540",
  "sourceIdentifier": "f45cbf4e-4146-4068-b7e1-655ffc2c548c"
}