MAL-2026-13605

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/yakuza0/MAL-2026-13605.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13605
Published
2026-08-07T12:49:02Z
Modified
2026-08-07T13:21:02.134002944Z
Summary
Malicious code in yakuza0 (npm)
Details

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

Source: amazon-inspector (c9952a92dd18e2353ebb4f2d8064884e7be770d23770096af6dbe1844d8b5fd6)

The package ships code that binds outbound network calls to a hardcoded non-standard host, https://registry-pxnpm.rdc.nfjbill.ren, from cli/index.js (fetch calls at lines 513, 554, 623 alongside a reference to process.versions for host fingerprinting). Additional files server/proxy/tire.js and server/proxy/csrf.js combine childprocess usage with curl-based POST/GET operations, mixing shell command execution with outbound HTTP to non-registry endpoints. The destination host is not the npm registry or a documented publisher domain; its name mimics the format of a private npm registry, and it is invoked from top-level module code paths rather than a user-invoked API. The composition — hardcoded attacker-shaped endpoint, runtime process/version fingerprinting, curl-driven POSTs, and childprocess shell execution wired to the same network paths — matches the shape of installer-targeted exfiltration and remote command execution.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-07T12:49:02Z",
            "id": "IN-MAL-2026-017066",
            "import_time": "2026-08-07T12:51:24.678155188Z",
            "versions": [
                "2.23.40"
            ],
            "source": "amazon-inspector",
            "sha256": "74b981d7ed2585510333eff3e9be65daeadbd89632d873097b25b54f5c340ee4"
        },
        {
            "versions": [
                "2.23.40-beta.3"
            ],
            "id": "IN-MAL-2026-017067",
            "import_time": "2026-08-07T12:51:24.703402644Z",
            "modified_time": "2026-08-07T12:49:14Z",
            "source": "amazon-inspector",
            "sha256": "c9952a92dd18e2353ebb4f2d8064884e7be770d23770096af6dbe1844d8b5fd6"
        }
    ]
}
References
Credits

Affected packages

npm / yakuza0

Package

Name
yakuza0
View open source insights on deps.dev
Purl
pkg:npm/yakuza0

Affected ranges

Affected versions

2.*
2.23.40-beta.3
2.23.40

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-sZFTx5tXR2CduC3wVewUGUXNhE5S7pxd9NIFGY+umm9G2x1VGSBCPvo+A7k9bqyHEpPZYF5KXcnM9LMkDpsEDg==",
                "sha1": "86dd995216eb912f4e195d5e7cab32f48f62503b"
            },
            "filename": "yakuza0-2.23.40.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "cli/index.js",
            "tlsh": "dd7372687cf6b012a33372294b6fd81067259c1b814cee79be8cc754afe011456e67fa",
            "sha256": "1bda3cecfe5551c4d787686cc801027f22f8045e2f6693729f5e223ab617a403"
        },
        {
            "path": "server/proxy/csrf.js",
            "tlsh": "a023821868fae4279623322d476fe9046324ac07d20cfd267e8dc395dfd442457e6bea",
            "sha256": "12c18ac2bb77b9a6bea24e66479c2166431f60fbe4393e6811f6eb67803e0190"
        },
        {
            "path": "server/proxy/tire.js",
            "tlsh": "22d2950cbaf26417561366299b2fad006769980bc50df8117f4cd36bafc441ca3ea7f9",
            "sha256": "544a6655156abb2c09065a073008cd45e964d3e29d3b99fb40fe9c4f4c7ac0dc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/yakuza0/MAL-2026-13605.json"