MAL-2026-12196

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/simple-date-formatter-new-4/MAL-2026-12196.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12196
Published
2026-08-05T08:47:49Z
Modified
2026-08-05T10:06:18.942818229Z
Summary
Malicious code in simple-date-formatter-new-4 (npm)
Details

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

Source: amazon-inspector (2f5ed3c402677fcfaeac396b55b9db5280445e9b0130133cc311a83f96f2a0de)

Package advertises itself as a date-formatting utility but its actual behavior on install is credential theft and internal-network reconnaissance. The postinstall script in package.json runs a shell one-liner that probes internal Kubernetes API endpoints, dumps /etc/resolv.conf and ip route, TCP-scans internal hosts, reads the pod's Kubernetes service-account token from /var/run/secrets/kubernetes.io/serviceaccount/token, and POSTs the aggregated output via curl to a hardcoded OAST (interact.sh) collector at http://safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo8. A bundled postinstall.js additionally enumerates ~/.ssh (listing public keys), collects the local username and platform, and POSTs the JSON to a hardcoded IP 124.221.154.135 over HTTPS; in-file comments describe it as an SSH-key theft C2 demo. The library payload (index.js) is a three-line wrapper around toLocaleDateString, functioning solely as cover for the install-time attack.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-014420",
            "import_time": "2026-08-05T09:28:09.118063018Z",
            "sha256": "2f5ed3c402677fcfaeac396b55b9db5280445e9b0130133cc311a83f96f2a0de",
            "modified_time": "2026-08-05T08:47:49Z",
            "versions": [
                "1.0.0"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / simple-date-formatter-new-4

Package

Name
simple-date-formatter-new-4
View open source insights on deps.dev
Purl
pkg:npm/simple-date-formatter-new-4

Affected ranges

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"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-GVv/FUKS9fuL2twiBUo97n1iskcKuFqErZEcXBf7KXW+Hp4ObnW8CCvnM/XZVLZIAKqw9eKLs0OzK+WUHuVFyQ==",
                "sha1": "b5dbf12e11c34f5fa578d8c6b555be98bc2a347b"
            },
            "filename": "simple-date-formatter-new-4-1.0.0.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "package.json",
            "sha256": "9ee02a980f309059ebe09657e091817c93d8962fa25461881cb20e746117728c",
            "tlsh": "9e11f0d8f4a09c33af8dc67ade17468a7a87948f1da03c0c95c3893c838cbe4017c1a4"
        },
        {
            "path": "postinstall.js",
            "sha256": "f2be6940c08d36a7f1ce83d5fe16fefd8c14edda5d124e0f6406725beb5020ef",
            "tlsh": "273165d558f9cd3007778685639b91263102fe13650ee940f3c807a51fe9a5449f2dee"
        },
        {
            "sha256": "1d5404dbbd7f6a35142bc11e276bcff7b334f927a198399e6b0d9aa09ecfd098",
            "path": "index.js",
            "tlsh": "8cc08c94a716b2866326122096a74100be5cc2300b9a6a62b88ec0c00144c12805ef8c"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/simple-date-formatter-new-4/MAL-2026-12196.json"