MAL-2026-18830

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@fadelsm/baileys/MAL-2026-18830.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18830
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:21Z
Summary
Malicious code in @fadelsm/baileys (npm)
Details

@fadelsm/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) 120363400362472743@newsletter, 120363406524087186@newsletter, 120363407144637058@newsletter, 120363408367338249@newsletter, 120363409508273158@newsletter, 12036340982021544@newsletter and 4 more (stored as 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": "6124f083369ee555d0d0b32a9702f3f4c0008e4cac4a03195081e861e61297d4"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "71dfb4222ed6acd3f788c1e7fd58548e1a631d3b41256ba37b9b19c10d7b65d4"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "8ce0541a2fa8de1851064d401c13d8d7546e3bc347746ca969199a5aac48b850"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "bdf0161f9e9e7f14d77a8049da5cad6876c64882899f55b59875d3c9088b1676"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "cca01b5bd1ff6181b1db9209d77f3e7faf3b8a399a21631543e782d58ffbf35a"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "cf6c5a6b325c4e5a68fe43dd9d83002e1f19e1b522090540ff84e0b35e4fddab"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @fadelsm/baileys

Package

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

Affected ranges

Affected versions

7.*
7.0.1
7.0.2
7.0.3
7.0.4
7.0.5
7.0.6
7.0.7
7.0.8
7.0.9

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/@fadelsm/baileys/MAL-2026-18830.json"