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CVE-2026-21711

Estado: AnalizadaMedia (5.3)—

A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them.

As a result, code running under `--permission` without `--allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary.

This vulnerability affects Node.js **25.x** processes using the Permission Model where `--allow-net` is intentionally omitted to restrict network access. Note that `--allow-net` is currently an experimental feature.

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).

Tecnologías afectadas (1)

Nodejs — Node.js

CWE

Referencias

JSON original (NVD)

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      "value": "A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them.\r\n\r\nAs a result, code running under `--permission` without `--allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary.\r\n\r\nThis vulnerability affects Node.js **25.x** processes using the Permission Model where `--allow-net` is intentionally omitted to restrict network access. Note that `--allow-net` is currently an experimental feature."
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      "value": "Un fallo en la aplicación de red del Modelo de Permisos de Node.js deja las operaciones del servidor de Sockets de Dominio Unix (UDS) sin las comprobaciones de permisos requeridas, mientras que todas las rutas de red comparables las aplican correctamente.\n\nComo resultado, el código que se ejecuta bajo --permission sin --allow-net puede crear y exponer puntos finales IPC locales, permitiendo la comunicación con otros procesos en el mismo host fuera del límite de restricción de red previsto.\n\nEsta vulnerabilidad afecta a los procesos de Node.js 25.x que utilizan el Modelo de Permisos donde se omite intencionadamente --allow-net para restringir el acceso a la red. Tenga en cuenta que --allow-net es actualmente una característica experimental."
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  "lastModified": "2026-08-19T13:52:49.310",
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