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mal-2026-16206
Vulnerability from ossf_malicious_packages
Published
2026-09-16 06:27
Modified
2026-09-16 06:27
Summary
Malicious code in @prime0/pcomatch (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (08299e41eb4feb9e324854bf5cd3386e6e52696b4b11443254374897a1ad3816)

index.js and the postinstall lifecycle script contact a hardcoded bare-IP endpoint at http://69.48.229.140:8080 over plain HTTP. On npm install, the postinstall hook collects host identifiers (hostname, username, platform, arch, cwd, node version, pid, all non-internal IP addresses, uptime, package name) and POSTs them as JSON to /b. On require() of the package main, the module beacons the same host, then polls /c every 30 seconds for JSON commands and executes the c field via child_process.exec, POSTing stdout/stderr back to /r. A source comment self-identifies the module as a stealth typosquat agent, while package.json advertises only a generic "small utility" description.

CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.

{
  "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": "postinstall.js",
              "sha256": "f96920db8aa0d72723e7eab7dc5319f4395a201f8eba307b4f81974730c1d75c",
              "tlsh": "571165e00191a6293222a1f1ca5f150917e9e4101201fe98f83cd285bff4e7c07f69ec"
            },
            {
              "path": "index.js",
              "sha256": "a7fc4e3167420ca41e89f929a9721a63761e20c83b555338d91580d46e3dd3f1",
              "tlsh": "ff4142eb91952124a17371f4ca5f64082bbad16202439e98bc2ce385af7493c072adfc"
            }
          ],
          "package_integrity": [
            {
              "filename": "pcomatch-1.0.0.tgz",
              "hashes": {
                "sha1": "1169c8d460a4cd79a384a0fdfe155ef5fc2f346e",
                "sha512_sri": "sha512-p7NofNwT8UfpWnHQCH3C2appuPLy2YUEjcIy3Z4tNEJFXW438C+Gcf6h6Oigi7nfqm00a2Hv0Db55NNMkxaJGA=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "@prime0/pcomatch"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-020073",
        "import_time": "2026-09-16T06:31:14.494431104Z",
        "modified_time": "2026-09-16T06:27:31Z",
        "sha256": "08299e41eb4feb9e324854bf5cd3386e6e52696b4b11443254374897a1ad3816",
        "source": "amazon-inspector",
        "versions": [
          "1.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (08299e41eb4feb9e324854bf5cd3386e6e52696b4b11443254374897a1ad3816)\nindex.js and the postinstall lifecycle script contact a hardcoded bare-IP endpoint at http://69.48.229.140:8080 over plain HTTP. On `npm install`, the postinstall hook collects host identifiers (hostname, username, platform, arch, cwd, node version, pid, all non-internal IP addresses, uptime, package name) and POSTs them as JSON to /b. On `require()` of the package main, the module beacons the same host, then polls /c every 30 seconds for JSON commands and executes the `c` field via child_process.exec, POSTing stdout/stderr back to /r. A source comment self-identifies the module as a stealth typosquat agent, while package.json advertises only a generic \"small utility\" description.\n",
  "id": "MAL-2026-16206",
  "modified": "2026-09-16T06:27:31Z",
  "published": "2026-09-16T06:27:31Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@prime0/pcomatch/v/1.0.0"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in @prime0/pcomatch (npm)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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