MAL-2026-18688

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Import Source

https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/kevinx-baileys/MAL-2026-18688.json

JSON Data

https://api.osv.dev/v1/vulns/MAL-2026-18688

Published

2026-10-26T00:00:00Z

Modified

2026-11-05T05:15:04Z

Summary

Malicious code in kevinx-baileys (npm)

Details

kevinx-baileys is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363408893555851@newsletter, 120363424295522327@newsletter, 120363426470081124@newsletter, 120363427718144294@newsletter (stored base64-encoded), using the victim's authenticated session and without telling them; the README says "Nothing is followed unless you call it." 1.2.1 was published one directory down (kevinx-baileys/lib/Socket/newsletter.js) under a placeholder package.json whose main, index.js, does not exist, so importing it by name fails, but it ships the same follow code; 1.2.2 restores the normal layout with the same lib/Socket/newsletter.js. Same behaviour as the PhantomSub family (MAL-2026-17342).

Database specific

{
    "iocs": {
        "domains": [],
        "files": [
            {
                "digests": {
                    "sha256": "7db0ac4e599e7acd4b80d5f5092d43488eed474f4f1bce4b315a35e864375d52"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "6368e28be94dd2dc19d8920385b593574ca21298b560108f544371022cf10d07"
                },
                "paths": [
                    "kevinx-baileys/lib/Socket/newsletter.js",
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}

References

Credits

- CyberXYZ - FINDER
- - https://cyberxyz.io

Affected packages

npm / kevinx-baileys

Package

Name: kevinx-baileys; View open source insights on deps.dev
Purl: pkg:npm/kevinx-baileys

Affected ranges

Affected versions

1.*

1.2.0

1.2.1

1.2.2

Database specific

cwes

[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]

source

"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/kevinx-baileys/MAL-2026-18688.json"