fkie_cve-2025-23167
Vulnerability from fkie_nvd
Published
2025-05-19 02:15
Modified
2025-05-19 16:15
Severity ?
6.5 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination. Impact: * This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.
References
support@hackerone.comhttps://nodejs.org/en/blog/vulnerability/may-2025-security-releases
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw in Node.js 20\u0027s HTTP parser allows improper termination of HTTP/1 headers using `\\r\\n\\rX` instead of the required `\\r\\n\\r\\n`.\nThis inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests.\n\nThe issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination.\n\nImpact:\n* This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade."
    },
    {
      "lang": "es",
      "value": "Una falla en el analizador HTTP de Node.js 20 permite la terminaci\u00f3n incorrecta de los encabezados HTTP/1 mediante `\\r\\n\\rX` en lugar del `\\r\\n\\r\\n` requerido. Esta inconsistencia facilita el contrabando de solicitudes, lo que permite a los atacantes eludir los controles de acceso basados en proxy y enviar solicitudes no autorizadas. El problema se solucion\u00f3 actualizando `llhttp` a la versi\u00f3n 9, que aplica la terminaci\u00f3n correcta de los encabezados. Impacto: * Esta vulnerabilidad afecta solo a los usuarios de Node.js 20.x anteriores a la actualizaci\u00f3n a `llhttp` v9."
    }
  ],
  "id": "CVE-2025-23167",
  "lastModified": "2025-05-19T16:15:27.317",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "support@hackerone.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-05-19T02:15:17.583",
  "references": [
    {
      "source": "support@hackerone.com",
      "url": "https://nodejs.org/en/blog/vulnerability/may-2025-security-releases"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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