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CVE-2026-23891

Estado: AnalizadaCrítica (9.3)—

Decidim is a participatory democracy framework. In versions below 0.30.5 and 0.31.0.rc1 through 0.31.0, a stored code execution vulnerability in the user name field allows a low-privileged attacker to execute arbitrary code in the context of any user who passively visits a comment page, resulting in high confidentiality and integrity impact across security boundaries. This issue has been fixed in versions 0.30.5 and 0.31.1.

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.

CWE-79 (XSS almacenado) en campo de nombre de usuario ejecuta código arbitrario en navegadores de visitantes pasivos (T1189). Confianza alta por vector NVD y descripción explícita de ejecución de código (T1059) con alto impacto de confidencialidad e integridad.

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 ContentUser TrainingPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Decidim — Decidim

CWE

Referencias

JSON original (NVD)

Mostrar
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