MAL-2026-10740

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/myreviews-core/MAL-2026-10740.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10740
Published
2026-07-16T18:38:13Z
Modified
2026-07-16T19:19:50.051504373Z
Summary
Malicious code in myreviews-core (npm)
Details

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

Source: amazon-inspector (9c41d5d4352e265f0efbc0089a19c5773ceeb76c0265831eeeeca19151fe4f64)

package.json declares a postinstall lifecycle hook that runs node -e to issue an HTTPS GET to a hardcoded webhook.site collector URL, appending the installer's hostname (os.hostname()), OS username (os.userInfo().username), current working directory (process.cwd()), and a timestamp as query parameters. The request fires automatically on npm install with no opt-in and no relation to any documented package functionality. The version number (99.0.0) is consistent with a dependency-confusion lure intended to shadow an internal package name and beacon successful installs to the attacker.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "9c41d5d4352e265f0efbc0089a19c5773ceeb76c0265831eeeeca19151fe4f64",
            "modified_time": "2026-07-16T18:38:13Z",
            "versions": [
                "99.0.0"
            ],
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-010725",
            "import_time": "2026-07-16T18:54:01.375432066Z"
        }
    ]
}
References
Credits

Affected packages

npm / myreviews-core

Package

Name
myreviews-core
View open source insights on deps.dev
Purl
pkg:npm/myreviews-core

Affected ranges

Affected versions

99.*
99.0.0

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "af5daedc6a4bff669320853ae2e6068fbeb5921f944cb1712b8f4c497f167b2a",
            "tlsh": "b4e0ab790524857738c802f109034809b9a2dc260088bc18ebbba20c5be5af23af59a8",
            "path": "package.json"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-+zsXWc1VtYRixJ+x5PCURjDh0SRw1dLbwUX4ML/uwQEUMH+eHGp05d9HdAMFFnyX9KGAnRiGrkYlb/iz0aLiGg==",
                "sha1": "574b8982766f76bea1da7569501983daf142db16"
            },
            "filename": "myreviews-core-99.0.0.tgz"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/myreviews-core/MAL-2026-10740.json"