MAL-2026-18803

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@aboutdisz/baileys/MAL-2026-18803.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18803
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:20Z
Summary
Malicious code in @aboutdisz/baileys (npm)
Details

@aboutdisz/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) 120363303656790201@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": "89120fb10b9c43c759824fc0de29860bcbec94c5ee5a23f338e6267dabe9c05b"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @aboutdisz/baileys

Package

Name
@aboutdisz/baileys
View open source insights on deps.dev
Purl
pkg:npm/%40aboutdisz/baileys

Affected ranges

Affected versions

1.*
1.0.0
1.0.2
1.0.3
1.0.4
1.0.5
1.0.7
1.0.8
1.0.9
1.0.10
1.0.11
1.0.12
1.0.13

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/@aboutdisz/baileys/MAL-2026-18803.json"