MAL-2026-18804

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@alzx7z/baileys/MAL-2026-18804.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18804
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:18Z
Summary
Malicious code in @alzx7z/baileys (npm)
Details

@alzx7z/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) 120363406524087186@newsletter, 120363407144637058@newsletter, 120363408367338249@newsletter, 12036340836738249@newsletter, 12036340882345807@newsletter, 120363409508273158@newsletter and 3 more (stored as base64 strings and character-code arrays), 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": "2021b6aaae6e646cf71ab1ca719a742fbef76dd18f9e86205e11839ee4baaca8"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "3af5e844e68434c3569ff291ad3e860377a9a800ca291eccc446a18dd38e1be1"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "8411eead6cee215714012e1b896da63cc39bbceeea14d7fb379803d440db9bc4"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "8668c2667442a36c5799e37c8b2b4c4f1b41d37fca9656aa67d86b8b7158cd08"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @alzx7z/baileys

Package

Name
@alzx7z/baileys
View open source insights on deps.dev
Purl
pkg:npm/%40alzx7z/baileys

Affected ranges

Affected versions

2.*
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8

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/@alzx7z/baileys/MAL-2026-18804.json"