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CVE-2026-44729

Estado: AnalizadaAlta (8.7)—

Twenty is an open source CRM. In 1.18.0 and earlier, the file serving endpoints in Twenty CRM at /files/* and /file/:fileFolder/:id serve uploaded files using fileStream.pipe(res) without setting any Content-Type, Content-Disposition, or X-Content-Type-Options response headers. This allows an authenticated attacker to upload an HTML file containing JavaScript, which will be rendered by the victim's browser in the context of the Twenty CRM domain when accessed — enabling session hijacking, account takeover, and data theft.

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.

XSS reflejado via upload de HTML/JS sin headers de seguridad (Content-Type, X-Content-Type-Options) permite ejecución de JavaScript en navegador (T1059.007), captura de sesiones (T1556) y robo de credenciales (T1078) en el contexto del dominio de Twenty CRM.

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

User TrainingUser Account ManagementRestrict Web-Based ContentPrivileged Account ManagementPassword PoliciesMulti-factor Authentication

Tecnologías afectadas (1)

Twenty — Twenty

CWE

Referencias

JSON original (NVD)

Mostrar
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