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CVE-2025-54803

Estado: AnalizadaAlta (7.9)—

js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the global Object.prototype by parsing a maliciously crafted TOML input. This is fixed in version 1.0.2.

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 remota (AV:N, PR:N, UI:N) de prototype pollution en parser JavaScript que permite ejecución de código en el navegador o contexto Node.js tras parsear entrada TOML maliciosa (CWE-1321), impactando integridad y disponibilidad (SI:H, SA: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

Network SegmentationVulnerability ScanningRestrict Web-Based ContentRestrict File and Directory PermissionsPrivileged Account ManagementLimit Access to Resource Over Network

Tecnologías afectadas (1)

Sunnyadn — Js-toml

CWE

Referencias

JSON original (NVD)

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      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T09:40:44.017",
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