MAL-2026-16356

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/starlette-healthchecks/MAL-2026-16356.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16356
Published
2026-09-21T16:50:02Z
Modified
2026-09-23T02:30:05Z
Summary
Malicious code in starlette-healthchecks (PyPI)
Details

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

Source: amazon-inspector (eebffb3f581b979c3e9a1dc0aef347111b50922326b2181cc9d2bc009c4e7021)

The package advertises itself as ASGI healthcheck/logging middleware, but its documented entry point configure_logging() (re-exported from src/starlette_healthcheck/setup.py via init.py) spawns a background thread that POSTs host reconnaissance to a hardcoded Azure Container Apps subdomain ca-fusion-dev-collector.victorioussmoke-2f009910.uksouth.azurecontainerapps.io, which the caller does not configure. The beacon iterates the entire os.environ and sends each variable name as a log line, resolves the machine's public IP via checkip.amazonaws.com, and sends the hostname. Requests are authenticated with a hardcoded X-Api-Key value ("fusion-default-api-key") shipped in the source. The env-var name inventory alone discloses which CI providers, cloud credentials, and secret-manager integrations exist on the host, which is targeting reconnaissance rather than request logging. Placing the exfiltration code in a module named setup.py inside the package blends the beacon into build-tooling naming and does not match the package's advertised purpose.

Source: kam193 (13c2438df5dfe3675f8861c03c803a273747135af8a70fc916235ad64d6cd22f)

The package appears to be a typosquatting research attempt. It provides an extremely basic functionality for the user and the main purpose seems to be the telemetry call. Additionally, similar package starlette-healthcheck was recently removed.

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

Campaign: 2026-09-starlette-healthcheck

Reasons (based on the campaign):

  • action-hidden-in-lib-usage

  • typosquatting

Database specific 
{
    "iocs":  {
        "domains":  [
            "ca-fusion-dev-collector.victorioussmoke-2f009910.uksouth.azurecontainerapps.io"
        ]
    },
    "malicious-packages-origins":  [
        {
            "id":  "pypi/2026-09-starlette-healthcheck/starlette-healthchecks",
            "import_time":  "2026-09-21T17:38:33.982933083Z",
            "modified_time":  "2026-09-21T16:50:02.361508Z",
            "sha256":  "13c2438df5dfe3675f8861c03c803a273747135af8a70fc916235ad64d6cd22f",
            "source":  "kam193",
            "versions":  [
                "1.3.1"
            ]
        },
        {
            "id":  "pypi/2026-09-starlette-healthcheck/starlette-healthchecks",
            "import_time":  "2026-09-21T21:37:47.148069691Z",
            "modified_time":  "2026-09-21T21:05:51.789499Z",
            "sha256":  "090da89e9cdd96102197fa3c5f16840adf89d67c49b6c22c8c8b0e8b6dd4296b",
            "source":  "kam193",
            "versions":  [
                "1.3.1",
                "1.3.2"
            ]
        },
        {
            "id":  "IN-MAL-2026-020331",
            "import_time":  "2026-09-23T02:26:00.312699674Z",
            "modified_time":  "2026-09-23T01:51:23Z",
            "sha256":  "a188debacc12b8da66c5bee77726baaaa37477ae614186d5d73b05b667e7b92e",
            "source":  "amazon-inspector",
            "versions":  [
                "1.3.2"
            ]
        },
        {
            "id":  "IN-MAL-2026-020330",
            "import_time":  "2026-09-23T02:26:00.27268269Z",
            "modified_time":  "2026-09-23T01:51:15Z",
            "sha256":  "eebffb3f581b979c3e9a1dc0aef347111b50922326b2181cc9d2bc009c4e7021",
            "source":  "amazon-inspector",
            "versions":  [
                "1.3.1"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / starlette-healthchecks

Package

Name
starlette-healthchecks
View open source insights on deps.dev
Purl
pkg:pypi/starlette-healthchecks

Affected ranges

Affected versions

1.*
1.3.1
1.3.2

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 
{
    "evidence_files":  [
        {
            "path":  "src/starlette_healthcheck/setup.py",
            "sha256":  "de3c2ee8cb970cd05602488f17acf71401c3ba351febb53021aca6547214efbe",
            "tlsh":  "2f81749bcd3b8d5207b2951d1c67d259f733430f250265a23abc635c2f3983ae0f9698"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "starlette_healthchecks-1.3.2-py3-none-any.whl",
            "hashes":  {
                "blake2b_256":  "2c03c06f48a79d1cf0800d9aae4f74c6d037694066f1244ab256078b5c4853b9",
                "md5":  "ae0d1f854535ad89930bfb6ccc85de88",
                "sha256":  "2588d3e1db8f1a8444b30cc44851c3a3ba2b16d657624da3eb5620bac0c935cf"
            }
        },
        {
            "filename":  "starlette_healthchecks-1.3.2.tar.gz",
            "hashes":  {
                "blake2b_256":  "6146bc3b174acc658af677fcfd29be362807678646039cc6dec54984cf38933a",
                "md5":  "6cee35ac7d7350b269bfcbf2bcbb9916",
                "sha256":  "2f45f5be0b47d7c0dfe16c57a533072aab334b34677c6ed1b7715347a71ca717"
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/starlette-healthchecks/MAL-2026-16356.json"