mal-2026-2947
Vulnerability from ossf_malicious_packages
Published
2026-04-20 08:22
Modified
2026-04-20 09:42
Summary
Malicious code in moonbit-schema-utils (PyPI)
Details

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

Source: kam193 (5fd7cc9fd6247802480f37b02a23faadb37c7fa5aded77358015c0861ab980e7)

Campaign includes a chain of dependencies that finally exfiltrate sensitive environment variables to a hardcoded GitHub repository as exfiltration target, and in specific environments also start a reverse shell. It appears to be targeting specifically one GitHub project, where the front-end package was included in a PR.

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

Campaign: 2026-04-moonbit-locale-compat

Reasons (based on the campaign):

  • The malicious code is intentionally included in a dependency of the package

  • The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

  • exfiltration-env-variables

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "moonbit-schema-utils"
      },
      "versions": [
        "1.1.0",
        "1.1.1"
      ]
    }
  ],
  "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-moonbit-locale-compat/moonbit-schema-utils",
        "import_time": "2026-04-20T08:51:57.133006749Z",
        "modified_time": "2026-04-20T08:22:00.347744Z",
        "sha256": "5fd7cc9fd6247802480f37b02a23faadb37c7fa5aded77358015c0861ab980e7",
        "source": "kam193",
        "versions": [
          "1.1.0",
          "1.1.1"
        ]
      },
      {
        "id": "pypi/2026-04-moonbit-locale-compat/moonbit-schema-utils",
        "import_time": "2026-04-20T09:41:09.789160646Z",
        "modified_time": "2026-04-20T08:22:00.347744Z",
        "sha256": "0cb4a226903832e664a13a4fdec2c58e8119183613b46ae185c3dc62acffa075",
        "source": "kam193",
        "versions": [
          "1.1.0",
          "1.1.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (5fd7cc9fd6247802480f37b02a23faadb37c7fa5aded77358015c0861ab980e7)\nCampaign includes a chain of dependencies that finally exfiltrate sensitive environment variables to a hardcoded GitHub repository as exfiltration target, and in specific environments also start a reverse shell. It appears to be targeting specifically one GitHub project, where the front-end package was included in a PR.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-04-moonbit-locale-compat\n\n\nReasons (based on the campaign):\n\n\n - The malicious code is intentionally included in a dependency of the package\n\n\n - The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim\u0027s machine.\n\n\n - exfiltration-env-variables\n",
  "id": "MAL-2026-2947",
  "modified": "2026-04-20T09:42:50Z",
  "published": "2026-04-20T08:22:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zongen01/wechat-editor-studio/pull/2/changes#diff-d9555f91ec2cf16d2b3d23115fe3cf6600fa8b42627de82a81da48191c54d99c"
    },
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/moonbit-schema-utils"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DiamondFrontline/wechat-editor-studio/commit/3c61484843fbc7fbeb5e81149296aa7843570ee1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in moonbit-schema-utils (PyPI)"
}


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