{
  "cvss": 6.2,
  "datePublished": "2026-08-04T01:16:20.380",
  "dateUpdated": "2026-10-23T23:10:00.157",
  "description": "A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected.\r\n\r\nRepeated exploitation of this condition can result in a denial of service.\r\n\r\nThis vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.",
  "id": "CVE-2026-58045",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "node",
            "vendor": "nodejs",
            "versions": [
              {
                "lessThanOrEqual": "26.5.0",
                "status": "affected",
                "version": "26.5.0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "24.18.0",
                "status": "affected",
                "version": "24.18.0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "22.23.1",
                "status": "affected",
                "version": "22.23.1",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "support@hackerone.com"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected.\r\n\r\nRepeated exploitation of this condition can result in a denial of service.\r\n\r\nThis vulnerability affects Node.js **22.x**, **24.x**, and **26.x**."
      },
      {
        "lang": "es",
        "value": "Un fallo en Node.js permite que un ’TypedArray’ ’byteLength’ falsificado active una aserción alcanzable en las API síncronas de ’node:zlib’, provocando el bloqueo de todo el proceso. Las 11 funciones síncronas de zlib se ven afectadas.\n\nLa explotación repetida de esta condición puede resultar en una denegación de servicio.\n\nEsta vulnerabilidad afecta a Node.js 22.x, 24.x y 26.x."
      }
    ],
    "id": "CVE-2026-58045",
    "lastModified": "2026-10-23T23:10:00.157",
    "metrics": {
      "cvssMetricV30": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 2.5,
          "impactScore": 3.6,
          "source": "support@hackerone.com",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-58045",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-04T14:19:40.312440Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-04T01:16:20.380",
    "references": [
      {
        "source": "support@hackerone.com",
        "url": "https://nodejs.org/en/blog/vulnerability/july-2026-security-releases"
      }
    ],
    "sourceIdentifier": "support@hackerone.com",
    "vulnStatus": "Awaiting Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-400"
          }
        ],
        "source": "support@hackerone.com",
        "type": "Secondary"
      }
    ]
  },
  "severity": "MEDIUM",
  "source": "nvd",
  "title": "A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `nod..."
}