mal-2026-2948
Vulnerability from ossf_malicious_packages
Published
2026-04-20 08:39
Modified
2026-04-20 08:39
Summary
Malicious code in leavemealone (PyPI)
Details

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

Source: kam193 (5628eb1d01e8eb7de8a582cd9ea85dff68eafde06f4e1164ae92842354db0bf7)

During building the package, it executes encrypted code. The content is unclear as the decryption key bases on the local environment variable. Given leaving a "flag" file at the end, this package can also be part of a CTF-like exercise, but it's not possible to be sure given the encrypted payload.


Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-04-leavemealone

Reasons (based on the campaign):

  • obfuscation
Credits

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "leavemealone"
      },
      "versions": [
        "0.1.1",
        "0.1.2"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-04-leavemealone/leavemealone",
        "import_time": "2026-04-20T09:41:09.783192644Z",
        "modified_time": "2026-04-20T08:39:35.545786Z",
        "sha256": "5628eb1d01e8eb7de8a582cd9ea85dff68eafde06f4e1164ae92842354db0bf7",
        "source": "kam193",
        "versions": [
          "0.1.1",
          "0.1.2"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (5628eb1d01e8eb7de8a582cd9ea85dff68eafde06f4e1164ae92842354db0bf7)\nDuring building the package, it executes encrypted code. The content is unclear as the decryption key bases on the local environment variable. Given leaving a \"flag\" file at the end, this package can also be part of a CTF-like exercise, but it\u0027s not possible to be sure given the encrypted payload.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-04-leavemealone\n\n\nReasons (based on the campaign):\n\n\n - obfuscation\n",
  "id": "MAL-2026-2948",
  "modified": "2026-04-20T08:39:35Z",
  "published": "2026-04-20T08:39:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/leavemealone"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in leavemealone (PyPI)"
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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