{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "dist/index.js",
              "sha256": "b58ae60ae0836b1569599e7f53790f6a70bb1ecd60e5b1232b5c76361c0afa22",
              "tlsh": "8a51cc1b3658b8f583f860f81b2bd1c3f931593301b29a24866cd7f0dda698a85f4e1d"
            }
          ],
          "package_integrity": [
            {
              "filename": "web3-eth-utils-6.2.8.tgz",
              "hashes": {
                "sha1": "a2097efb6c2da53078b86201916ce749086cc42e",
                "sha512_sri": "sha512-OtU86BvsL8c0JDFcMa2RdYvmXaiSvEHBlCOtiaifxh4fTq9FV7Z7Lr0bA55hU/WAGJmi+3iYQ8gDtBEOMsK1SA=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "web3-eth-utils"
      },
      "versions": [
        "6.2.8"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-007253",
        "import_time": "2026-06-23T16:54:11.897080612Z",
        "modified_time": "2026-06-23T15:55:57Z",
        "sha256": "4a262e70316cd74a87b043cd1985e456639781763d4a3ef69aa09d99a2795154",
        "source": "amazon-inspector",
        "versions": [
          "6.2.8"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (4a262e70316cd74a87b043cd1985e456639781763d4a3ef69aa09d99a2795154)\nPackage name, README, repository URL, contributors, and module structure are copied from the legitimate \u0027@ethereumjs/util\u0027 / \u0027ethereumjs-util\u0027 package, presenting itself as a drop-in for that widely-used Ethereum utility library. The compiled Node entry dist/index.js contains a side-effect-only `require(\"assertcore\")` at line 60 (no symbols from the module are used), and assertcore is declared as a runtime dependency (^3.1.7) in package.json. This `require` is absent from the TypeScript source src/index.ts and from the browser bundle dist.browser/index.js \u2014 it was injected into the shipped Node bundle after the build, a deliberate smuggling pattern. Any consumer who installs web3-eth-utils believing it to be the real ethereumjs util package will pull assertcore into their dependency tree and execute its top-level code at every `require(\u0027web3-eth-utils\u0027)`, handing arbitrary install/require-time execution to the assertcore maintainer.\n",
  "id": "MAL-2026-6326",
  "modified": "2026-06-23T15:55:57Z",
  "published": "2026-06-23T15:55:57Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/web3-eth-utils/v/6.2.8"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in web3-eth-utils (npm)"
}