MAL-2026-6356

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/safe-json-38bd/MAL-2026-6356.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6356
Published
2026-06-23T21:40:03Z
Modified
2026-06-23T22:46:23Z
Summary
Malicious code in safe-json-38bd (npm)
Details

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

Source: amazon-inspector (523c83ae906ad871cb1ea3ffef4c0ae4e2d9f717376b86e97f6575e47cbc640d)

package.json declares a postinstall hook ("postinstall": "node run.js") that executes run.js automatically on npm install. run.js imports os, fs, http, https, and child_process and gathers host identity and environment data: os.hostname(), os.userInfo(), os.platform(), process.env.USER, process.cwd(), plus filesystem reads via fs.readFileSync / fs.existsSync. The collected data is base64-encoded (Buffer.from(...).toString('base64')) and POSTed out via HTTP/HTTPS at multiple call sites in the same script. The package name has no documented purpose that would justify install-time host reconnaissance, base64 wrapping, or outbound POSTs. Combined fingerprints (lifecycle-hook auto-execute + host-identity collection + base64 encoding + outbound HTTP POST) match a credential / system-intel exfiltration dropper.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-007371",
            "import_time":  "2026-06-23T22:31:27.021939725Z",
            "modified_time":  "2026-06-23T21:40:03Z",
            "sha256":  "523c83ae906ad871cb1ea3ffef4c0ae4e2d9f717376b86e97f6575e47cbc640d",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / safe-json-38bd

Package

Name
safe-json-38bd
View open source insights on deps.dev
Purl
pkg:npm/safe-json-38bd

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 
{
    "evidence_files":  [
        {
            "path":  "package.json",
            "sha256":  "0a21781c4049f9ca7a0f82c2673ddfc6d6a9b4630add5ca4dce12c702837a1ce",
            "tlsh":  "ffe068288c203a3379c42aa80ca29257a7308f0f20143d2d92bb2928429bb3a747b55d"
        },
        {
            "path":  "run.js",
            "sha256":  "cfb226521b98ad39c775f5cdd08ac995f01488895a0b9b093001d22f6f91cf11",
            "tlsh":  "5682d67219f64a1479a3eaade75fa4006523f1077a51eda0f28c73610fcf568c162af8"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "safe-json-38bd-1.0.0.tgz",
            "hashes":  {
                "sha1":  "ebff9ecfbb5811543dbe78438d53efc81c49461e",
                "sha512_sri":  "sha512-LMqq2OLmo0J1NnhKUHgh1XyMMFZymtX4FOLQ0mHLEe5QRrsYEJoZbRzbYqMwVdyOg2RgiB+ZjX4K+EeKslaQsg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/safe-json-38bd/MAL-2026-6356.json"