mal-2026-2946
Vulnerability from ossf_malicious_packages
Published
2026-04-20 08:25
Modified
2026-04-20 09:42
Summary
Malicious code in moonbit-metrics-validator (PyPI)
Details

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

Source: kam193 (e6bb44c25db578131ec69b1c961c22f67cabb0b81aae5fe9d4620194bf8d83cc)

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "moonbit-metrics-validator"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "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-metrics-validator",
        "import_time": "2026-04-20T08:51:57.13224869Z",
        "modified_time": "2026-04-20T08:25:08.605966Z",
        "sha256": "e6bb44c25db578131ec69b1c961c22f67cabb0b81aae5fe9d4620194bf8d83cc",
        "source": "kam193",
        "versions": [
          "1.0.0"
        ]
      },
      {
        "id": "pypi/2026-04-moonbit-locale-compat/moonbit-metrics-validator",
        "import_time": "2026-04-20T09:41:09.787891167Z",
        "modified_time": "2026-04-20T08:25:08.605966Z",
        "sha256": "76ebf99852d91f4d88a4f717b1aa730f494cb45a9b50308a1c2a1734137bedb8",
        "source": "kam193",
        "versions": [
          "1.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (e6bb44c25db578131ec69b1c961c22f67cabb0b81aae5fe9d4620194bf8d83cc)\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-2026-2946",
  "modified": "2026-04-20T09:42:50Z",
  "published": "2026-04-20T08:25:08Z",
  "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-metrics-validator"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DiamondFrontline/wechat-editor-studio/commit/3c61484843fbc7fbeb5e81149296aa7843570ee1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in moonbit-metrics-validator (PyPI)"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.


Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…