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CVE-2026-79657

Estado: AnalizadaCrítica (9.3)—

Las versiones de NLTK anteriores a 3.10.3 contienen una vulnerabilidad de ejecución remota de código en los cargadores de pickle con lista de permitidos, que confían en espacios de nombres de módulo completos en lugar de en invocables seguros específicos. Los atacantes pueden crear cargas útiles pickle maliciosas que invocan funciones peligrosas dentro del espacio de nombres, como ReppTokenizer._execute y numpy.f2py.crackfortran.myeval, mediante pickle REDUCE para ejecutar comandos arbitrarios durante la carga de artefactos de modelos o tokenizadores.

Traducción automática del texto original de NVD (en inglés).

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.

CVE en NLTK: pickle inseguro en loaders permite RCE remoto sin autenticación (AV:N, PR:N, UI:N). Impacto: ejecución arbitraria de comandos mediante REDUCE en payloads maliciosos.

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 ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Nltk — Nltk

CWE

Referencias

JSON original (NVD)

Mostrar
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