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CVE-2026-4603

Estado: AnalizadaBaja (2)—

Versions of the package jsrsasign before 11.1.1 are vulnerable to Division by zero due to the RSASetPublic/KEYUTIL parsing path in ext/rsa.js and the BigInteger.modPowInt reduction logic in ext/jsbn.js. An attacker can force RSA public-key operations (e.g., verify and encryption) to collapse to deterministic zero outputs and hide “invalid key” errors by supplying a JWK whose modulus decodes to zero.

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)

Kjur — Jsrsasign

CWE

Referencias

JSON original (NVD)

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          "options": [
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              "exploitation": "none"
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          "version": "2.0.3",
          "timestamp": "2026-03-23T14:42:08.541897Z"
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          "valueDensity": "NOT_DEFINED",
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  "published": "2026-03-23T06:16:22.233",
  "references": [
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      "value": "Versions of the package jsrsasign before 11.1.1 are vulnerable to Division by zero due to the RSASetPublic/KEYUTIL parsing path in ext/rsa.js and the BigInteger.modPowInt reduction logic in ext/jsbn.js. An attacker can force RSA public-key operations (e.g., verify and encryption) to collapse to deterministic zero outputs and hide “invalid key” errors by supplying a JWK whose modulus decodes to zero."
    },
    {
      "lang": "es",
      "value": "Versiones del paquete jsrsasign anteriores a la 11.1.1 son vulnerables a la división por cero debido a la ruta de análisis RSASetPublic/KEYUTIL en ext/rsa.js y la lógica de reducción BigInteger.modPowInt en ext/jsbn.js. Un atacante puede forzar que las operaciones de clave pública RSA (por ejemplo, verificar y cifrado) colapsen a salidas cero deterministas y ocultar errores de 'clave no válida' al proporcionar un JWK cuyo módulo se decodifica a cero."
    }
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  "lastModified": "2026-06-22T03:18:31.867",
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