MAL-2026-18812

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Import Source

https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@bufferstudio/baileys-natsu/MAL-2026-18812.json

JSON Data

https://api.osv.dev/v1/vulns/MAL-2026-18812

Published

2026-10-27T00:00:00Z

Modified

2026-11-09T23:15:21Z

Summary

Malicious code in @bufferstudio/baileys-natsu (npm)

Details

@bufferstudio/baileys-natsu 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/index.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363430188538810@newsletter (stored as base64 strings), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Database specific

{
    "iocs": {
        "domains": [],
        "files": [
            {
                "digests": {
                    "sha256": "1d45574bcb55c75a33a42e35c12ac83a85436a2dbe11815dac4c8563756443ed"
                },
                "paths": [
                    "lib/Socket/index.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}

References

Credits

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

Affected packages

npm / @bufferstudio/baileys-natsu

Package

Name: @bufferstudio/baileys-natsu; View open source insights on deps.dev
Purl: pkg:npm/%40bufferstudio/baileys-natsu

Affected ranges

Affected versions

1.*

1.2.2

1.2.3

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/@bufferstudio/baileys-natsu/MAL-2026-18812.json"