MAL-2025-6387

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/udn_extras/MAL-2025-6387.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2025-6387
Published
2025-07-28T20:15:00Z
Modified
2025-09-26T11:06:46Z
Summary
Malicious code in udn_extras (npm)
Details

The package is a malware because it contains a postinstall script that executes index.js. The index.js script gathers sensitive information such as hostname, platform, username, IP address, and environment variables and sends it to an external server (webhook.site) via an HTTPS POST request. This constitutes data exfiltration and is a clear indicator of malicious behavior.

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

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "RLMA-2025-04718",
            "import_time":  "2025-08-29T06:42:39.791888548Z",
            "modified_time":  "2025-08-28T07:42:58Z",
            "sha256":  "a028a0a91f89087330f67a92378357a91dcb8dbf1101fb7ee981b32b419e2889",
            "source":  "reversing-labs",
            "versions":  [
                "1.0.0",
                "9999.0.0"
            ]
        },
        {
            "id":  "RLUA-2025-05179",
            "import_time":  "2025-09-26T11:06:13.584687023Z",
            "modified_time":  "2025-09-26T09:46:17Z",
            "sha256":  "1e6b6dceadc025bdbf4fc6949cd4da2ce2dfed83cc9cd939681dfe76ecd9ea15",
            "source":  "reversing-labs"
        }
    ]
}
References
Credits

Affected packages

npm / udn_extras

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.0
9999.*
9999.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/udn_extras/MAL-2025-6387.json"