fkie_cve-2025-34146
Vulnerability from fkie_nvd
Published
2025-07-31 15:15
Modified
2025-07-31 18:42
Severity ?
7.0 (High) - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
A prototype pollution vulnerability exists in @nyariv/sandboxjs versions <= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-service (DoS) condition or, under certain conditions, escape the sandboxed environment intended to restrict code execution. The vulnerability stems from insufficient prototype access checks in the sandbox’s executor logic, particularly in the handling of JavaScript function objects returned.
References
disclosure@vulncheck.comhttps://gist.github.com/Hagrid29/9df27829a491080f923c4f6b8518d7e3
disclosure@vulncheck.comhttps://github.com/nyariv/SandboxJS/issues/31
disclosure@vulncheck.comhttps://www.npmjs.com/package/@nyariv/sandboxjs
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/nyariv-sandboxjs-prototype-pollution-sandbox-escape-dos
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A prototype pollution vulnerability exists in @nyariv/sandboxjs versions \u003c= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-service (DoS) condition or, under certain conditions, escape the sandboxed environment intended to restrict code execution. The vulnerability stems from insufficient prototype access checks in the sandbox\u2019s executor logic, particularly in the handling of JavaScript function objects returned."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de contaminaci\u00f3n de prototipos en las versiones de @nyariv/sandboxjs anteriores a la 0.8.23, que permite a los atacantes inyectar propiedades arbitrarias en Object.prototype mediante c\u00f3digo JavaScript manipulado. Esto puede provocar una denegaci\u00f3n de servicio (DoS) o, en ciertas circunstancias, escapar del entorno de pruebas destinado a restringir la ejecuci\u00f3n del c\u00f3digo. La vulnerabilidad se debe a comprobaciones de acceso de prototipos insuficientes en la l\u00f3gica del ejecutor de pruebas, especialmente en el manejo de los objetos de funci\u00f3n JavaScript devueltos."
    }
  ],
  "id": "CVE-2025-34146",
  "lastModified": "2025-07-31T18:42:37.870",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-07-31T15:15:36.260",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://gist.github.com/Hagrid29/9df27829a491080f923c4f6b8518d7e3"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/nyariv/SandboxJS/issues/31"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.npmjs.com/package/@nyariv/sandboxjs"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/nyariv-sandboxjs-prototype-pollution-sandbox-escape-dos"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}


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