mal-2026-13479
Vulnerability from ossf_malicious_packages
Published
2026-08-06 23:54
Modified
2026-08-07 01:01
Summary
Malicious code in @cats-cdf/browser-metrics-meter (npm)
Details

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

Source: amazon-inspector (83df5c7e17dd2b9a808bddee17deb157e88a12632a632177f7969fce9ccfa7a8)

The package's preinstall lifecycle script runs automatically on npm install and executes whoami and hostname, then fetches the machine's public IP from ifconfig.me and transmits all three values as query-string parameters to a hardcoded out-of-band interaction domain (kwphewvexhjbtfduscqybx6q7c862eh0g.oast.fun) over plain HTTP via curl, with a wget fallback. The domain is an OAST (out-of-band application security testing) collector used to receive exfiltrated reconnaissance data. The behavior fires unconditionally with no first-party relationship, no consent, and no documented purpose consistent with the package name.

CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.
  • CWE-506 - The product contains code that appears to be malicious in nature.
Credits
Amazon Inspector inspector-research@amazon.com
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "scripts/preinstall.js",
              "sha256": "4275061552723f1d31253e74f931ebac93d9f83b772b3c68a53374c1b4c9dd68",
              "tlsh": "6d01f9f7636553f04fc2cd96854eb58b5317a12a7502bca87cbd0a563b49c0c13f22d5"
            }
          ],
          "package_integrity": [
            {
              "filename": "browser-metrics-meter-3.1.1.tgz",
              "hashes": {
                "sha1": "323192f97e3145a22729bbfe83acba7f9665c887",
                "sha512_sri": "sha512-9HtZuafPv3YNVJKH3VtFrrplxOqPi3SmI1BfmxSfR7Zo7PU3olunbogG3ezVIutw7P6iF4gLEg2fyBedKKDdCw=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "@cats-cdf/browser-metrics-meter"
      },
      "versions": [
        "3.1.1",
        "2.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-016846",
        "import_time": "2026-08-07T00:59:21.271160391Z",
        "modified_time": "2026-08-06T23:54:52Z",
        "sha256": "1617d21e0e87913cb47a2bdf2c2f9e010d8eb91de61b74e692ee8bac8299ba94",
        "source": "amazon-inspector",
        "versions": [
          "3.1.1"
        ]
      },
      {
        "id": "IN-MAL-2026-016848",
        "import_time": "2026-08-07T00:59:21.45439328Z",
        "modified_time": "2026-08-06T23:55:33Z",
        "sha256": "83df5c7e17dd2b9a808bddee17deb157e88a12632a632177f7969fce9ccfa7a8",
        "source": "amazon-inspector",
        "versions": [
          "2.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (83df5c7e17dd2b9a808bddee17deb157e88a12632a632177f7969fce9ccfa7a8)\nThe package\u0027s preinstall lifecycle script runs automatically on `npm install` and executes `whoami` and `hostname`, then fetches the machine\u0027s public IP from ifconfig.me and transmits all three values as query-string parameters to a hardcoded out-of-band interaction domain (kwphewvexhjbtfduscqybx6q7c862eh0g.oast.fun) over plain HTTP via curl, with a wget fallback. The domain is an OAST (out-of-band application security testing) collector used to receive exfiltrated reconnaissance data. The behavior fires unconditionally with no first-party relationship, no consent, and no documented purpose consistent with the package name.\n",
  "id": "MAL-2026-13479",
  "modified": "2026-08-07T01:01:07Z",
  "published": "2026-08-06T23:54:52Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@cats-cdf/browser-metrics-meter/v/3.1.1"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@cats-cdf/browser-metrics-meter/v/2.0.0"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in @cats-cdf/browser-metrics-meter (npm)"
}



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