MAL-2026-6736

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/unreal-mladapter/MAL-2026-6736.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6736
Published
2026-07-02T21:22:11Z
Modified
2026-07-08T17:16:55Z
Summary
Malicious code in unreal-mladapter (PyPI)
Details

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

Source: amazon-inspector (126bf3493d123333b47fba2ed68e30c085c8266dfb4d16923a81e9ee094f4780)

The package name unreal-mladapter mimics Epic Games' internal UnrealMLAdapter plugin and is published at version 99999.0.0 — the canonical high-version bump used in dependency-confusion attacks to override private/internal resolution. On any import unreal_mladapter, the top-level init.py spawns a background thread that POSTs a JSON payload containing the installer's hostname, USER/USERNAME environment variable, and current working directory to http://109.123.247.172/pypi over plaintext HTTP. Errors are swallowed. Package metadata is placeholder (author 'Security Research', description 'Internal package'). The import-time exfiltration of host identifiers to a hardcoded non-publisher bare-IP endpoint, combined with the 99999.0.0 dependency-confusion version and internal-namespace impersonation, is an unambiguous supply-chain attack shape.

Source: kam193 (b8b4f17043a9c57ea2087c59c771151186c117ab64cbf5c45df85df62469aa89)

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • The package overrides the install command in setup.py to execute malicious code during installation.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "pypi/GENERIC-standard-pypi-install-pentest/unreal-mladapter",
            "import_time": "2026-07-02T21:29:02.698060894Z",
            "modified_time": "2026-07-02T21:22:11.835921Z",
            "sha256": "b8b4f17043a9c57ea2087c59c771151186c117ab64cbf5c45df85df62469aa89",
            "source": "kam193",
            "versions": [
                "99999.0.0"
            ]
        },
        {
            "id": "IN-MAL-2026-008125",
            "import_time": "2026-07-08T17:01:32.592611726Z",
            "modified_time": "2026-07-08T16:28:23Z",
            "sha256": "126bf3493d123333b47fba2ed68e30c085c8266dfb4d16923a81e9ee094f4780",
            "source": "amazon-inspector",
            "versions": [
                "99999.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / unreal-mladapter

Package

Name
unreal-mladapter
View open source insights on deps.dev
Purl
pkg:pypi/unreal-mladapter

Affected ranges

Affected versions

99999.*
99999.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "unreal_mladapter/__init__.py",
            "sha256": "3124d0f79a78da76e94ef7a596fb49c4f5d5cd9e401107bb826eb157b86d7765",
            "tlsh": "1501acc2e8345982924b714888264a742237b4576f02b8b0bd4c9f7c0fcd46952746b8"
        },
        {
            "path": "setup.py",
            "sha256": "a458c42155e433ac19b99105daa34b572a2d2be25a3d1570e092c5dff7e7620c",
            "tlsh": "aad095514d4143604485c45d14e13441152465773e2070d4f34003903f8f0cb9f33159"
        }
    ],
    "package_integrity": [
        {
            "filename": "unreal_mladapter-99999.0.0.tar.gz",
            "hashes": {
                "blake2b_256": "fb61cc42982a6782fa50ab96a7c373e131fc3167807d4b05ac7a4f0334258f2a",
                "md5": "d8049485f5d3b5e54740f8e8ce9468f0",
                "sha256": "76607f7597d95c1ecd21c8c4cfa0404d68e9180ac1dbbaee0c4e45ff2c8e5a70"
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/unreal-mladapter/MAL-2026-6736.json"