MAL-2026-5755

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/anthropickit/MAL-2026-5755.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5755
Published
2026-06-14T01:37:46Z
Modified
2026-06-14T08:01:43.723603866Z
Summary
Malicious code in anthropickit (PyPI)
Details

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

Source: amazon-inspector (f3e103a8a230b5fb3066fb0a9eb7f5fdf5831d4c7b71a9d83de54d8d6673eae2)

On pip install, setup.py collects the contents of every file in ~/.ssh (excluding knownhosts and authorizedkeys, so private keys are read), all environment variables whose names contain KEY/SECRET/TOKEN/PASS/AUTH/API, plus the hostname and USER. The collected data is written to /tmp/runner_exfil.json and POSTed to https://enqqnvvtgrnyl.x.pipedream.net/. The package body is otherwise empty (init.py only sets version), the PKG-INFO metadata is all UNKNOWN, and the version is the sentinel 999.9.9 — a dependency-confusion pattern targeting developers searching for Anthropic-related tooling. Any installer (especially CI runners) running pip install anthropickit immediately loses SSH private keys and credential-shaped environment variables to an attacker-controlled pipedream webhook.

Source: kam193 (ff4126bd465ae6de09a2eaa94a4fd2d7d385a5dae2c093372668d4b7ecb81633)

During installation, the package attempts to exfiltrate sensitive env variables and SSH keys.

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

Campaign: 2026-06-anthropickit

Reasons (based on the campaign):

  • exfiltration-ssh-keys

  • exfiltration-env-variables

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "pypi/2026-06-anthropickit/anthropickit",
            "import_time": "2026-06-14T02:22:45.870360622Z",
            "sha256": "ff4126bd465ae6de09a2eaa94a4fd2d7d385a5dae2c093372668d4b7ecb81633",
            "source": "kam193",
            "modified_time": "2026-06-14T01:37:47.165599Z",
            "versions": [
                "999.9.9"
            ]
        },
        {
            "id": "IN-MAL-2026-006444",
            "versions": [
                "999.9.9"
            ],
            "sha256": "584ef638a5415f4eccf6645abbcd06198e9abecf8b75cbd9328aa58962d9b38b",
            "source": "amazon-inspector",
            "modified_time": "2026-06-14T07:05:12Z",
            "import_time": "2026-06-14T07:43:27.142879663Z"
        },
        {
            "id": "IN-MAL-2026-006443",
            "versions": [
                "999.9.9"
            ],
            "sha256": "f3e103a8a230b5fb3066fb0a9eb7f5fdf5831d4c7b71a9d83de54d8d6673eae2",
            "source": "amazon-inspector",
            "modified_time": "2026-06-14T07:05:11Z",
            "import_time": "2026-06-14T07:43:27.08033219Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / anthropickit

Package

Name
anthropickit
View open source insights on deps.dev
Purl
pkg:pypi/anthropickit

Affected ranges

Affected versions

999.*
999.9.9

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "setup.py",
            "sha256": "7361a8e38c72a2992890ae755b5df4a304dff5a31368abdf5cd4b354d8b5e56e",
            "tlsh": "6b11564de46b2431d777bb4c1c1c8d323b9efd3a17a6b8b5b8ccaf1047496362558218"
        },
        {
            "path": "PKG-INFO",
            "sha256": "e7bde94252c51c1ee62011071106d31ae2a3a3be4afcb55e944a858f1e06df18",
            "tlsh": "e9c02b4854334133d2d71589246c43d01dd34608244d3cfd404036004b106511f700f3"
        }
    ],
    "package_integrity": [
        {
            "filename": "anthropickit-999.9.9.tar.gz",
            "hashes": {
                "md5": "7df12487bade710459ccea2d3570cdbc",
                "blake2b_256": "4d90ebb6cc11a278e781638995201fb18f530912490fff547478ba75b68ff8ba",
                "sha256": "4ae13303fa1663a36cfaa70bebe77b52b12dbf17eef24db15c6c24c631d38fbf"
            }
        }
    ],
    "ips": [
        "104.16.1.34"
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/anthropickit/MAL-2026-5755.json"