mal-2026-18689

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/loader-utils-kit/MAL-2026-18689.json"
      },
      "package": {
        "ecosystem": "npm",
        "name": "loader-utils-kit",
        "purl": "pkg:npm/loader-utils-kit"
      },
      "versions": [
        "4.2.1",
        "4.3.5"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://cyberxyz.io"
      ],
      "name": "CyberXYZ",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [],
      "files": [
        {
          "digests": {
            "sha256": "c6a9028513792f288fec1d7c217c55d9541d96d436cb119ef0553c3fd49d6c41"
          },
          "paths": [
            "lib/contract.js"
          ]
        }
      ],
      "ips": [],
      "urls": []
    }
  },
  "details": "loader-utils-kit ships lib/contract.js, byte-identical to the pino-testkit payload: an obfuscated module that decodes and evaluates code at load. It is a new name for the pino-testkit (MAL-2026-16484) campaign; the file hashes below match that record's evidence. The package presents itself as an ordinary utility, so the code runs on import or install without the user knowing.",
  "id": "MAL-2026-18689",
  "modified": "2026-11-05T05:15:05.065079013Z",
  "published": "2026-10-26T00:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/loader-utils-kit"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/MAL-2026-16484"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "Malicious code in loader-utils-kit (npm)"
}