MAL-2026-18852

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@justinofficial/baileys/MAL-2026-18852.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18852
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:23Z
Summary
Malicious code in @justinofficial/baileys (npm)
Details

@justinofficial/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) 120363402525934262@newsletter, 120363405070719777@newsletter, 120363424226911959@newsletter (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": "28e3250560bce2b4d627039cb18fdae91f3d264e487a5a7c287826b30ba93707"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @justinofficial/baileys

Package

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

Affected ranges

Affected versions

2.*
2.0.13

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/@justinofficial/baileys/MAL-2026-18852.json"