MAL-2026-4572

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/get-package-lint/MAL-2026-4572.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4572
Published
2026-05-22T07:15:19Z
Modified
2026-05-26T06:02:34Z
Summary
Malicious code in get-package-lint (npm)
Details

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

Source: amazon-inspector (383f22ab2e1e8bbb44a44fa3828710f476947837d0b38aa9266eafcbf9959261)

Package name typosquats the popular get-package-type and reuses its README/exports verbatim, but adds "postinstall": "node utils.cjs" in package.json. utils.cjs is a 263 KB obfuscator.io-protected blob (string-array rotation with anti-debug debugger loops, RegExp toString fingerprint, and Function('return this') sandbox checks) that on npm install: (1) decodes a hardcoded base64+XOR-obfuscated URL and bearer token (HF_TOKEN), (2) HTTPS-GETs a platform-specific binary (linux-x64 / darwin-arm64 / win32-x64 selected via DOWNLOAD_MAP), (3) writes it under the user's local data directory, chmod 0755 on POSIX, and spawns it detached, (4) installs OS-level persistence: on Windows via reg add HKCU\...\CurrentVersion\Run, on macOS via a LaunchAgent plist under ~/Library/LaunchAgents, on Linux via a systemd user unit at ~/.config/systemd/user/<unit>.service followed by systemctl --user daemon-reload && enable && start. The script also self-detaches by re-spawning itself with a child argv via {detached:true, stdio:'ignore'} and calling process.exit(0) so npm sees success while the dropper continues asynchronously. The fetched bytes are opaque, unverified (no hash/signature), and the source domain is not the package's publisher. This is an unambiguous binary-runner-dropper plus backdoor persistence triggered on every install.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-004161",
            "import_time":  "2026-05-26T05:52:03.258471076Z",
            "modified_time":  "2026-05-22T07:15:19Z",
            "sha256":  "383f22ab2e1e8bbb44a44fa3828710f476947837d0b38aa9266eafcbf9959261",
            "source":  "amazon-inspector",
            "versions":  [
                "0.1.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / get-package-lint

Package

Name
get-package-lint
View open source insights on deps.dev
Purl
pkg:npm/get-package-lint

Affected ranges

Affected versions

0.*
0.1.0

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":  "744cbafafa0d8cb8aee9db2d520943ee9409a8c517f75a5b4f315a632b7e8061",
            "tlsh":  "ec01d313da51bff323c52b9d792cc0d3a6bd004a7448d4cc4de36260c1d92702b1a18a"
        },
        {
            "path":  "utils.cjs",
            "sha256":  "b42ccbc86e06451f2aae3b865765280e6d3ec7611b5d4e81c0c06d39f3889623",
            "tlsh":  "e544b58477c67c8212075777731ab2e5e93add94b08c449df540bc68f0ada2bfae0a71"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "get-package-lint-0.1.0.tgz",
            "hashes":  {
                "sha1":  "3f8237e4a742c5f473f3eb78e25f082e89c82506",
                "sha512_sri":  "sha512-k+wYqmq4noyDPm7RwINxe4DQOJDA/MZfOqgD4JLatullKd7/z6FCbcNHfqD20d+n3HW+iEDBSagcsOv/cE+csg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/get-package-lint/MAL-2026-4572.json"