mal-2026-5086
Vulnerability from ossf_malicious_packages
Published
2026-05-30 03:57
Modified
2026-05-30 03:57
Summary
Malicious code in polymarket-data (PyPI)
Details

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

Source: kam193 (a690aea77d0d48fae2a4f500f434cc5d4fb5cde042b7b902b0ee647b97921dc4)

The package attempts to exfiltrate sensitive data related to cryptocurrencies and API keys, as well as establish persistence. Likely related to 2026-05-polymarket-data-fetcher.

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

Campaign: 2026-05-polymarket-data

Reasons (based on the campaign):

  • crypto-related

  • exfiltration-crypto

  • exfiltration-credentials

  • persistence

Credits
Kamil Mańkowski (kam193) github.com/kam193 bad-packages.kam193.eu/
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "polymarket-data"
      },
      "versions": [
        "2.0.0",
        "2.0.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "ANALYST"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [
        "bold-river-456.onrender.com",
        "ideal-octo-spoon.onrender.com",
        "quiet-sky-123.onrender.com"
      ],
      "urls": [
        "https://bold-river-456.onrender.com/api/v1",
        "https://ideal-octo-spoon.onrender.com/api/v1",
        "https://quiet-sky-123.onrender.com/api/v1"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-05-polymarket-data/polymarket-data",
        "import_time": "2026-05-30T04:48:38.02503993Z",
        "modified_time": "2026-05-30T03:57:51.233242Z",
        "sha256": "a690aea77d0d48fae2a4f500f434cc5d4fb5cde042b7b902b0ee647b97921dc4",
        "source": "kam193",
        "versions": [
          "2.0.0",
          "2.0.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (a690aea77d0d48fae2a4f500f434cc5d4fb5cde042b7b902b0ee647b97921dc4)\nThe package attempts to exfiltrate sensitive data related to cryptocurrencies and API keys, as well as establish persistence. Likely related to 2026-05-polymarket-data-fetcher.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-05-polymarket-data\n\n\nReasons (based on the campaign):\n\n\n - crypto-related\n\n\n - exfiltration-crypto\n\n\n - exfiltration-credentials\n\n\n - persistence\n",
  "id": "MAL-2026-5086",
  "modified": "2026-05-30T03:57:51Z",
  "published": "2026-05-30T03:57:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/polymarket-data"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in polymarket-data (PyPI)"
}


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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.

Sightings

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.