MAL-2026-13486

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/fastapii/MAL-2026-13486.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13486
Published
2026-08-07T07:04:06Z
Modified
2026-08-07T12:35:24.849436951Z
Summary
Malicious code in fastapii (PyPI)
Details

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

Source: amazon-inspector (bf67e733322de0ce3d08269697e6ccd9460233319cadd5f97f05c8d1e855665a)

fastapii 0.1.2 is a single-character typosquat of the popular fastapi package. Its setup.py registers a custom setuptools install cmdclass (LinuxInstall) whose postinstall step decodes a base64-encoded payload (HOOKB64) and runs it via exec(compile(...)). On Linux, the decoded payload calls urllib.request.urlretrieve to fetch a binary from https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something into /tmp, chmods it to 0755, and launches it detached via subprocess.Popen with startnew_session=True. The GitHub account hosting the binary is unrelated to the package's declared identity, the fetch is unpinned and unverified (no hash or signature), and the Linux-only gate means the payload stays dormant on many developer laptops but fires in Linux CI and production. The shipped module is a stub named djangoo containing only a trivial hello() function, and PKG-INFO/README metadata ('HTTP client utilities', '# requestss') further obscure the package identity — the install-time dropper is the package's sole real behavior.

Source: kam193 (ccfc3dd07e620dc6bda1b28b4d8f77932ee217aff579270c0e0c74453e215943)

Package imitates name of a popula library. During installation, obfuscated code downloads a malicious executable and starts it. It then exfiltrates at least cryptocurrency wallet data, probably more.

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

Campaign: 2026-08-flasq

Reasons (based on the campaign):

  • typosquatting

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

  • exfiltration-generic

  • Downloads and executes a remote executable.

  • obfuscation

  • exfiltration-crypto

Database specific 
{
    "iocs": {
        "urls": [
            "https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something"
        ],
        "ips": [
            "193.70.34.101"
        ]
    },
    "malicious-packages-origins": [
        {
            "versions": [
                "0.1.1",
                "0.1.2",
                "0.2.0",
                "0.3.0"
            ],
            "import_time": "2026-08-07T07:35:19.069517191Z",
            "sha256": "ccfc3dd07e620dc6bda1b28b4d8f77932ee217aff579270c0e0c74453e215943",
            "modified_time": "2026-08-07T07:04:06.022771Z",
            "id": "pypi/2026-08-flasq/fastapii",
            "source": "kam193"
        },
        {
            "versions": [
                "0.1.1",
                "0.1.2",
                "0.2.0",
                "0.3.0"
            ],
            "import_time": "2026-08-07T08:57:13.347588921Z",
            "sha256": "d076049fb705714b3379544119324a95831a1621c67f595a78a78e6d696c006d",
            "modified_time": "2026-08-07T07:04:06.022771Z",
            "id": "pypi/2026-08-flasq/fastapii",
            "source": "kam193"
        },
        {
            "id": "IN-MAL-2026-016887",
            "import_time": "2026-08-07T12:23:25.801241502Z",
            "sha256": "6436cfdbe89d8bb31eea95d858dd0a772b0fb0f5ebdbaf5fbbd77f0ae367fe85",
            "modified_time": "2026-08-07T12:13:03Z",
            "versions": [
                "0.1.1"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-016884",
            "import_time": "2026-08-07T12:23:25.691505673Z",
            "sha256": "671dc4cdeb2b54f33380b6274ba3c9b2fcc9a5819fcd12495882f384755f5806",
            "modified_time": "2026-08-07T12:12:40Z",
            "versions": [
                "0.2.0"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-016881",
            "import_time": "2026-08-07T12:23:25.560611327Z",
            "sha256": "a1b02dcc696bd9a90f0ba56bf7ffded7fe309595f51f7f65f3b16e102c121fc0",
            "modified_time": "2026-08-07T12:12:12Z",
            "versions": [
                "0.3.0"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-016885",
            "import_time": "2026-08-07T12:23:25.71920404Z",
            "sha256": "bf67e733322de0ce3d08269697e6ccd9460233319cadd5f97f05c8d1e855665a",
            "modified_time": "2026-08-07T12:12:47Z",
            "versions": [
                "0.1.2"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

PyPI / fastapii

Package

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

Affected ranges

Affected versions

0.*
0.1.1
0.1.2
0.2.0
0.3.0

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"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "md5": "5f7dee45871adec2bf13ce27bf519382",
                "sha256": "fd7abb149a96a8f20ed5fae569216457101c57ac29b93a527094ebaae773e927",
                "blake2b_256": "df424bf9267f69773153fcd00a705471ed0929c316a8b2c22da3ee093e38a8a2"
            },
            "filename": "fastapii-0.1.1.tar.gz"
        }
    ],
    "evidence_files": [
        {
            "path": "setup.py",
            "sha256": "1f73bbeef78e8cd5df29ed6ae14b72b10041b327c80d89f04d7db821cead4e6d",
            "tlsh": "d521865b8e2510b06c18c7845843411f162baae1ac2074e4beed33642bcd249ca7f0d7"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/fastapii/MAL-2026-13486.json"