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CVE-2023-51774

Estado: AnalizadaAlta (8.4)—

The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.

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)

Json-jwt Project — Json-jwt

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-51774",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-51774",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-08-26T20:08:13.723369Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "version": "3.1",
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 2.5
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  "affected": [
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    {
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      "affectedData": [
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  "published": "2024-02-29T01:42:05.597",
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      "url": "https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.md",
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode."
    },
    {
      "lang": "es",
      "value": "La gema json-jwt (también conocida como JSON::JWT) 1.16.3 para Ruby a veces permite eludir los controles de identidad mediante un ataque de confusión de signo/cifrado. Por ejemplo, a veces se puede utilizar JWE para omitir JSON::JWT.decode."
    }
  ],
  "lastModified": "2026-06-17T06:41:38.193",
  "configurations": [
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}