MAL-2026-18860

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@kyynotdevv/baileys/MAL-2026-18860.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18860
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:23Z
Summary
Malicious code in @kyynotdevv/baileys (npm)
Details

@kyynotdevv/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) 120363405751989725@newsletter, 120363407393907794@newsletter, 120363409815577276@newsletter, 120363424433029723@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": "516b197899fbadce42ac8dd645805213dc596292c7c6a873025542400f346a6d"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "b5519bf81a371e410eaa9a4766d13428b9eae863aa48663057338e354ddc63e4"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "fc4dcb8355a9ff4a17a05bf9baed0048374b4707e5fc9fcf81d037bc0669ae99"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @kyynotdevv/baileys

Package

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

Affected ranges

Affected versions

2.*
2.0.3
2.0.4
2.0.6

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/@kyynotdevv/baileys/MAL-2026-18860.json"