FKIE_CVE-2026-34043

Vulnerability from fkie_nvd - Published: 2026-03-31 03:15 - Updated: 2026-04-03 16:53
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.
References
security-advisories@github.comhttps://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204bPatch
security-advisories@github.comhttps://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5Release Notes
security-advisories@github.comhttps://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6vVendor Advisory
Impacted products
Vendor Product Version
yahoo serialize *
To clipboard 

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              "criteria": "cpe:2.3:a:yahoo:serialize:*:*:*:*:*:*:*:*",
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    {
      "lang": "en",
      "value": "Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted \"array-like\" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5."
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      "value": "Serializar JavaScript a un superconjunto de JSON que incluye expresiones regulares y funciones. Antes de la versi\u00f3n 7.0.5, existe una vulnerabilidad de denegaci\u00f3n de servicio (DoS) causada por el agotamiento de la CPU. Al serializar un objeto \u0027similar a un array\u0027 especialmente dise\u00f1ado (un objeto que hereda de Array.prototype pero tiene una propiedad \u0027length\u0027 muy grande), el proceso entra en un bucle intensivo que consume el 100% de la CPU y se cuelga indefinidamente. Este problema ha sido parcheado en la versi\u00f3n 7.0.5."
    }
  ],
  "id": "CVE-2026-34043",
  "lastModified": "2026-04-03T16:53:52.573",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
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        "source": "nvd@nist.gov",
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  "published": "2026-03-31T03:15:58.400",
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      "tags": [
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    }
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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