MAL-2026-16323

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/action-slack-message-root/MAL-2026-16323.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16323
Published
2026-09-21T03:30:11Z
Modified
2026-09-21T04:00:06Z
Summary
Malicious code in action-slack-message-root (npm)
Details

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

Source: amazon-inspector (6d5f3deb6623e5340770d4e8866adc3d7239938e5adefc4b699c897287d84eba)

package.json declares scripts.preinstall = 'node index.js', which runs automatically on npm install. index.js collects host reconnaissance — os.hostname(), os.platform(), os.arch(), os.release(), os.uptime(), os.cpus(), memory info, and the output of shell commands whoami, id, pwd, and uname -a via child_process — and POSTs the JSON payload over plain HTTP to a hardcoded Burp Suite Collaborator subdomain at http://x86cmb7n60gbagfm4fdws0nw5nbjzanz.oastify.com. The package name resembles legitimate Slack-notification tooling, but the shipped code performs only reconnaissance exfiltration with no advertised functionality. The tarball also declares an unpinned dependency on openmct-heatmap ^1.0.1, consistent with a dependency-confusion / research-probe shape.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-020226",
            "import_time": "2026-09-21T03:46:37.677305656Z",
            "modified_time": "2026-09-21T03:30:11Z",
            "sha256": "6d5f3deb6623e5340770d4e8866adc3d7239938e5adefc4b699c897287d84eba",
            "source": "amazon-inspector",
            "versions": [
                "1.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / action-slack-message-root

Package

Name
action-slack-message-root
View open source insights on deps.dev
Purl
pkg:npm/action-slack-message-root

Affected ranges

Affected versions

1.*
1.0.1

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": "index.js",
            "sha256": "87537a1a68267ba6ac23cea10b522174562d43d12f7213416f65063e5c29b4e7",
            "tlsh": "f14142d029f56b3002e3b99e5a9760077323e2073c00b8e9bd9d93810f8c16c9a65bd5"
        },
        {
            "path": "package.json",
            "sha256": "c94fbee85ff7d6b3cab174fc2c78dd1ced110344739bd27e81d6a25637cc6f88",
            "tlsh": "ddc08c30cce4e9b335da26e3207e5017b5f16c4b005c7c9d73cb00299b9d6a6a4af31a"
        }
    ],
    "package_integrity": [
        {
            "filename": "action-slack-message-root-1.0.1.tgz",
            "hashes": {
                "sha1": "04d2f2dfaad38d2d178e17907553558a79dc742d",
                "sha512_sri": "sha512-O/rx5iRNgiZYSK/IO1ooOEVr0QIiR2Ydt9icce6oKg5rgysnZNT22co2nIiAr58FrnsPfZhdXZxHP7LARYzAbA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/action-slack-message-root/MAL-2026-16323.json"