MAL-2026-18810

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@billabilloyy/baileys/MAL-2026-18810.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18810
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:21Z
Summary
Malicious code in @billabilloyy/baileys (npm)
Details

@billabilloyy/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 src/Socket/newsletter.js, src/WAUSync/Protocols/USyncNewsletterProtocol.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363395678317603@newsletter, 120363400362472743@newsletter, 120363408893555851@newsletter, 120363426470081124@newsletter, 120363427718144294@newsletter and the channel invite code(s) 0029VbCX3x9Ae5VxVnDa172S, 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": "f2a46bc73d0af45846b4f5b99344867fe9a492e7a22694d372e85cde204a5f70"
                },
                "paths": [
                    "src/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "3a3dada3a32fb28f20a15473f4275b57ad9fb8ade9b13a4f408ca9ab1503ce09"
                },
                "paths": [
                    "src/WAUSync/Protocols/USyncNewsletterProtocol.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @billabilloyy/baileys

Package

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

Affected ranges

Affected versions

1.*
1.0.0

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/@billabilloyy/baileys/MAL-2026-18810.json"