MAL-2026-12518

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/break-after/MAL-2026-12518.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12518
Published
2026-08-05T13:13:32Z
Modified
2026-08-05T14:35:16.361810729Z
Summary
Malicious code in break-after (npm)
Details

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

Source: amazon-inspector (80e06e591fd35c119051df59a1ed1771e74146adb37f3aef05367812412af1ad)

The package's preinstall script runs automatically on npm install and collects os.hostname(), os.userInfo().username, process.cwd(), the configured npm registry, and a set of CI/repository environment variables, then sends the values as query-string parameters in an HTTP GET to the hardcoded bare-IP endpoint http://75.119.137.232:31337/depconfuse. The version number 9999.0.0 combined with the name of an existing public package and preinstall exfiltration of host, user, working-directory, and internal CI repository identifiers is the fingerprint of a dependency-confusion reconnaissance payload: it is designed to be pulled in by an internal build that resolves the higher version from the public registry, and to report back the identity of the victim organization and its private repository names.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T13:13:32Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-014932",
            "import_time": "2026-08-05T14:19:44.2262004Z",
            "sha256": "80e06e591fd35c119051df59a1ed1771e74146adb37f3aef05367812412af1ad",
            "versions": [
                "9999.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / break-after

Package

Name
break-after
View open source insights on deps.dev
Purl
pkg:npm/break-after

Affected ranges

Affected versions

9999.*
9999.0.0

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "break-after-9999.0.0.tgz",
            "hashes": {
                "sha512_sri": "sha512-np9KND5OuzSlrnvlTqhcLROWUV8C7SWa5EjyZFfmeo+nmFXB76uQy+qM5uTghcJAwca1G+vFBMcpa+Req2taKg==",
                "sha1": "c2a052a7287d964a9a33b08485486b94df441b24"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "dd117bb9c68c0c3409c2178479696c1eb8fbd291338294917f2d71d26bb227046b71b9",
            "sha256": "2217bcd326b5f7dcda91d9063dfc5fb8d59cb2802d8a7b499cf2a43c65ec79e8",
            "path": "callback.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/break-after/MAL-2026-12518.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]