MAL-2026-19018

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/skylerss/MAL-2026-19018.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-19018
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:36Z
Summary
Malicious code in skylerss (npm)
Details

skylerss 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/chats.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363408224884979@newsletter, 120363426241392511@newsletter, 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": "07c074946bd96ed24b7aab8f4622bfa2d3f2bd0f2d5e612a9d06844a86d077de"
                },
                "paths": [
                    "lib/Socket/chats.js"
                ]
            },
            {
                "digests": {
                    "sha256": "67fd40fb68ac3a2a87ad1d079097d12f3c2b89cbc34fd76a9f0061894f5fc017"
                },
                "paths": [
                    "lib/Socket/chats.js"
                ]
            },
            {
                "digests": {
                    "sha256": "a14a5ab9e6604abf735e3dfb7d1c156d60b15249efc9d669c78f18b1cd029e38"
                },
                "paths": [
                    "lib/Socket/chats.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / skylerss

Package

Name
skylerss
View open source insights on deps.dev
Purl
pkg:npm/skylerss

Affected ranges

Affected versions

2.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4

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/skylerss/MAL-2026-19018.json"