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CVE-2026-73486

Estado: AnalizadaCrítica (9)—

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to execute code in the unsandboxed pyodide environment with full system access.

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 inyección de código (CWE-94) en parámetro customReadCSV de nodo CSV Agent, requiere autenticación (PR:L) con acceso remoto (AV:N). Permite ejecución arbitraria de código Python en entorno pyodide sin sandbox, impactando confidencialidad, integridad y disponibilidad (VC:H/VI:H/VA:H)

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 ManagementDisable or Remove Feature or ProgramVulnerability ScanningThreat Intelligence ProgramRestrict Web-Based ContentRestrict File and Directory Permissions

Tecnologías afectadas (1)

Flowiseai — Flowise

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-73486",
  "cveTags": [],
  "metrics": {
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          "valueDensity": "NOT_DEFINED",
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  "published": "2026-08-13T12:17:23.947",
  "references": [
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      ]
    }
  ],
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      "lang": "en",
      "value": "Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to execute code in the unsandboxed pyodide environment with full system access."
    }
  ],
  "lastModified": "2026-09-03T18:48:11.850",
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        {
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}