MAL-2026-3695
Vulnerability from ossf_malicious_packages
Published
2026-05-12 07:43
Modified
2026-05-12 19:03
Summary
Malicious code in pirxcypackage (PyPI)
Details
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (5de481a31a831804a096bf6cf87157c0b0ee158aa7306c95080447764f9f7540)
PirxcyPackage/init.py fetches https://pastebin.com/raw/91tFF63S and passes the response body to exec() on every import. This is a textbook remote-code-execution supply-chain pattern: the payload is mutable, unauthenticated, unsigned, and controlled by a third-party paste owner, so any installer importing this package runs arbitrary attacker-chosen Python. The staging via Pastebin also ensures static review of the wheel cannot observe actual behavior. Installer harm is direct and unambiguous.
CWE
- CWE-506 - The product contains code that appears to be malicious in nature.
Credits
{
"affected": [
{
"database_specific": {
"cwes": [
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
}
],
"indicators": {
"domains": [
"pastebin.com"
],
"evidence_files": [
{
"path": "PirxcyPackage/__init__.py",
"sha256": "5c742188cdac2f649dc78f48a46d4a0a42b7ec19ef290af1945adda6f913023e",
"tlsh": "23211129bc8ad73317c701597b8fc4dfd12ed168175a62d1952180586277a3c06df4dc"
}
],
"package_integrity": [
{
"filename": "PirxcyPackage-8.0.0-py2-none-any.whl",
"hashes": {
"blake2b_256": "1f2511888159b71760cf8a0734ec9b943e0d1b405b40690ed03382862fc080d2",
"md5": "161d9d5f8e87ea66bc518757b968bd79",
"sha256": "cff907689a5abfba582b5e214544b96b34f352b7a0248607b269f5807bd4819b"
}
},
{
"filename": "PirxcyPackage-8.0.0.tar.gz",
"hashes": {
"blake2b_256": "51d3f93e232ece104772889ee4323ccc0cf362820d2366b37dde6087a058b6b4",
"md5": "f3afe26816bd54b99f8783e9cb979e01",
"sha256": "8eaca3a630758dc513060ab76a283bdb066f11b3ac4f21f0dd5c1728d7e1374d"
}
}
],
"urls": [
"https://pastebin.com/raw/91tFF63S"
]
}
},
"package": {
"ecosystem": "PyPI",
"name": "PirxcyPackage"
},
"versions": [
"8.0.0"
]
}
],
"credits": [
{
"contact": [
"actran@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-002316",
"import_time": "2026-05-13T20:10:55.711401902Z",
"modified_time": "2026-05-12T19:03:07Z",
"sha256": "5de481a31a831804a096bf6cf87157c0b0ee158aa7306c95080447764f9f7540",
"source": "amazon-inspector",
"versions": [
"8.0.0"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (5de481a31a831804a096bf6cf87157c0b0ee158aa7306c95080447764f9f7540)\nPirxcyPackage/__init__.py fetches https://pastebin.com/raw/91tFF63S and passes the response body to exec() on every import. This is a textbook remote-code-execution supply-chain pattern: the payload is mutable, unauthenticated, unsigned, and controlled by a third-party paste owner, so any installer importing this package runs arbitrary attacker-chosen Python. The staging via Pastebin also ensures static review of the wheel cannot observe actual behavior. Installer harm is direct and unambiguous.\n",
"id": "MAL-2026-3695",
"modified": "2026-05-12T19:03:07Z",
"published": "2026-05-12T07:43:27Z",
"references": [
{
"type": "PACKAGE",
"url": "https://pypi.org/project/PirxcyPackage/8.0.0/"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in pirxcypackage (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.
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