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CVE-2025-45770

Estado: ModificadaAlta (7)—

jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.

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-326 (débil encriptación) en JWT v5.4.3 expuesto en red sin privilegios (AV:N/PR:N); permite lectura y alteración de tokens JWT 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

Privileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkVulnerability ScanningUser Account ManagementRestrict File and Directory Permissions

Tecnologías afectadas (1)

JWT Project — JWT

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-45770",
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          "attackComplexity": "HIGH",
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  "published": "2025-07-31T20:15:33.280",
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      "tags": [
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    },
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      "lang": "es",
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  ],
  "lastModified": "2026-06-17T09:25:41.320",
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