CVE-2026-58042

Full vulnerability record from the local CVENow database.

Description

A flaw in Node.js can cause dns.resolveAny() Aborts the Node.js Process When a DNS Response Contains More Than 256 A Records. Repeated triggering of this condition can lead to denial of service. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Severity

MEDIUM

CVSS score

5.9 (v3.0)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-08-04 01:16:20.123000

Last modified

2026-10-23 23:10:00.157000

View original CVE JSON

{
  "id": "CVE-2026-58042",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-04T01:16:20.123",
  "lastModified": "2026-10-23T23:10:00.157",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw in Node.js can cause dns.resolveAny() Aborts the Node.js Process When a DNS Response Contains More Than 256 A Records.\r\n\r\nRepeated triggering of this condition can lead to denial of service.\r\n\r\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**."
    },
    {
      "lang": "es",
      "value": "Un fallo en Node.js puede causar que dns.resolveAny() aborte el proceso de Node.js cuando una respuesta DNS contiene más de 256 registros A.\n\nEl desencadenamiento repetido de esta condición puede llevar a una denegación de servicio.\n\nEsta vulnerabilidad afecta a Node.js 26.x, 24.x, y 22.x."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "nodejs",
          "product": "node",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "26.5.0",
              "lessThanOrEqual": "26.5.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "24.18.0",
              "lessThanOrEqual": "24.18.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "22.23.1",
              "lessThanOrEqual": "22.23.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-04T14:19:36.224340Z",
          "id": "CVE-2026-58042",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://nodejs.org/en/blog/vulnerability/july-2026-security-releases",
      "source": "[email protected]"
    }
  ]
}