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CVE-2023-49551

Estado: ModificadaAlta (7.5)—

An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_op_json_parse function in the msj.c file.

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)

Cesanta — MJS

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-49551",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-49551",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-03-04T21:11:46.038912Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
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          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "NONE"
        },
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  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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  "published": "2024-01-02T23:15:12.233",
  "references": [
    {
      "url": "https://github.com/cesanta/mjs/issues/257",
      "tags": [
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        "Issue Tracking",
        "Vendor Advisory"
      ],
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      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "NVD-CWE-noinfo"
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      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "value": "CWE-20"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_op_json_parse function in the msj.c file."
    },
    {
      "lang": "es",
      "value": "Un problema en Cesanta mjs 2.20.0 permite que un atacante remoto provoque una denegación de servicio a través de la función mjs_op_json_parse en el archivo msj.c."
    }
  ],
  "lastModified": "2026-06-17T06:36:07.853",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}