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CVE-2024-21505

Estado: AplazadaAlta (7.5)—

Versions of the package web3-utils before 4.2.1 are vulnerable to Prototype Pollution via the utility functions format and mergeDeep, due to insecure recursive merge. An attacker can manipulate an object's prototype, potentially leading to the alteration of the behavior of all objects inheriting from the affected prototype by passing specially crafted input to these functions.

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Web3 — Web3-utilsAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-21505",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-21505",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-08-23T19:10:35.532555Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "report@snyk.io",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "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"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "report@snyk.io",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "web3-utils",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "4.2.1",
              "versionType": "semver"
            }
          ]
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:web3:web3-utils:*:*:*:*:*:*:*:*"
          ],
          "vendor": "web3",
          "product": "web3-utils",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "4.2.1",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2024-03-25T05:15:50.663",
  "references": [
    {
      "url": "https://github.com/web3/web3.js/commit/8ed041c6635d807b3da8960ad49e125e3d1b0e80",
      "source": "report@snyk.io"
    },
    {
      "url": "https://security.snyk.io/vuln/SNYK-JS-WEB3UTILS-6229337",
      "source": "report@snyk.io"
    },
    {
      "url": "https://github.com/web3/web3.js/commit/8ed041c6635d807b3da8960ad49e125e3d1b0e80",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.snyk.io/vuln/SNYK-JS-WEB3UTILS-6229337",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "report@snyk.io",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Versions of the package web3-utils before 4.2.1 are vulnerable to Prototype Pollution via the utility functions format and mergeDeep, due to insecure recursive merge.\rAn attacker can manipulate an object's prototype, potentially leading to the alteration of the behavior of all objects inheriting from the affected prototype by passing specially crafted input to these functions."
    },
    {
      "lang": "es",
      "value": "Las versiones del paquete web3-utils anteriores a la 4.2.1 son vulnerables a Prototype Pollution a través de las funciones de utilidad format y mergeDeep, debido a una fusión recursiva insegura. Un atacante puede manipular el prototipo de un objeto, lo que podría provocar la alteración del comportamiento de todos los objetos que heredan del prototipo afectado al pasar entradas especialmente manipuladas a estas funciones."
    }
  ],
  "lastModified": "2026-06-17T07:09:38.177",
  "sourceIdentifier": "report@snyk.io"
}