mal-2025-191666
Vulnerability from ossf_malicious_packages
Published
2025-10-20 11:58
Modified
2025-12-03 00:04
Summary
Malicious code in yelp-pkg (PyPI)
Details

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

Source: kam193 (fdea5ca17bb09234a292159e525a2a38ac3fd43760c6f2184aa27f563f320075)

During import, the package attempts to exfiltrate potentially sensitive data.


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

Campaign: GENERIC-questionable-pentest

Reasons (based on the campaign):

  • exfiltration-env-variables

  • exfiltration-generic

  • The package overrides the install command in setup.py to execute malicious code during installation.

  • typosquatting


{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "yelp-pkg",
        "purl": "pkg:pypi/yelp-pkg"
      },
      "versions": [
        "1337.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)"
    },
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "ANALYST"
    },
    {
      "contact": [
        "https://www.reversinglabs.com"
      ],
      "name": "ReversingLabs",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "RLMA-2025-05644",
        "import_time": "2025-12-02T09:09:39.917652181Z",
        "modified_time": "2025-12-01T12:55:12Z",
        "sha256": "6c7a1648bff6faa98675b02278353e85594405df04fe9bbd92cf3f1151ce79e0",
        "source": "reversing-labs",
        "versions": [
          "1337.0.0"
        ]
      },
      {
        "id": "pypi/GENERIC-questionable-pentest/yelp-pkg",
        "import_time": "2025-12-02T22:30:55.784788995Z",
        "modified_time": "2025-10-20T11:58:32.224488Z",
        "sha256": "70b3149ccd32bf7e90a06b289e8ea3363279bbe38f6047eb5427e04a12fc11d1",
        "source": "kam193",
        "versions": [
          "1337.0.0"
        ]
      },
      {
        "id": "pypi/GENERIC-questionable-pentest/yelp-pkg",
        "import_time": "2025-12-02T23:07:18.827686702Z",
        "modified_time": "2025-10-20T11:58:32.224488Z",
        "sha256": "fdea5ca17bb09234a292159e525a2a38ac3fd43760c6f2184aa27f563f320075",
        "source": "kam193",
        "versions": [
          "1337.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (fdea5ca17bb09234a292159e525a2a38ac3fd43760c6f2184aa27f563f320075)\nDuring import, the package attempts to exfiltrate potentially sensitive data.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: GENERIC-questionable-pentest\n\n\nReasons (based on the campaign):\n\n\n - exfiltration-env-variables\n\n\n - exfiltration-generic\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n\n - typosquatting\n",
  "id": "MAL-2025-191666",
  "modified": "2025-12-03T00:04:28Z",
  "published": "2025-10-20T11:58:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/yelp-pkg"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in yelp-pkg (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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