mal-2026-2946
Vulnerability from ossf_malicious_packages
-= 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
{
"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)"
}
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.