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CVE-2026-27598

Estado: AnalizadaAlta (7.1)—

Dagu is a workflow engine with a built-in Web user interface. In versions up to and including 1.16.7, the `CreateNewDAG` API endpoint (`POST /api/v1/dags`) does not validate the DAG name before passing it to the file store. An authenticated user with DAG write permissions can write arbitrary YAML files anywhere on the filesystem (limited by the process permissions). Since dagu executes DAG files as shell commands, writing a malicious DAG to the DAGs directory of another instance or overwriting config files can lead to remote code execution. Commit e2ed589105d79273e4e6ac8eb31525f765bb3ce4 fixes the issue.

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.

Requiere UI:R (interacción del usuario) para abrir/procesar DAG malicioso. Impacto: ejecución de comandos shell (VI:H en DAG) e inyección/manipulación de archivos YAML de configuración.

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 ContentRestrict File and Directory PermissionsPrivileged Account ManagementRemote Data StorageLimit Software InstallationExecution Prevention

Tecnologías afectadas (1)

Dagu — Dagu

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-27598",
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      "value": "Dagu is a workflow engine with a built-in Web user interface. In versions up to and including 1.16.7, the `CreateNewDAG` API endpoint (`POST /api/v1/dags`) does not validate the DAG name before passing it to the file store. An authenticated user with DAG write permissions can write arbitrary YAML files anywhere on the filesystem (limited by the process permissions). Since dagu executes DAG files as shell commands, writing a malicious DAG to the DAGs directory of another instance or overwriting config files can lead to remote code execution. Commit e2ed589105d79273e4e6ac8eb31525f765bb3ce4 fixes the issue."
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      "value": "Dagu es un motor de flujo de trabajo con una interfaz de usuario web integrada. En versiones hasta la 1.16.7 inclusive, el endpoint de la API 'CreateNewDAG' ('POST /api/v1/dags') no valida el nombre del DAG antes de pasarlo al almacén de archivos. Un usuario autenticado con permisos de escritura de DAG puede escribir archivos YAML arbitrarios en cualquier lugar del sistema de archivos (limitado por los permisos del proceso). Dado que dagu ejecuta archivos DAG como comandos de shell, escribir un DAG malicioso en el directorio de DAGs de otra instancia o sobrescribir archivos de configuración puede conducir a ejecución remota de código. El commit e2ed589105d79273e4e6ac8eb31525f765bb3ce4 soluciona el problema."
    }
  ],
  "lastModified": "2026-06-17T10:27:22.060",
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