MAL-2026-18905

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@trashcore/baileys/MAL-2026-18905.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18905
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:29Z
Summary
Malicious code in @trashcore/baileys (npm)
Details

@trashcore/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) 120363420249672073@newsletter, 120363424020283759@newsletter (stored as base64 strings), 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": "0f7c4fdf4ae831dff101585d8fc12f8cc1a51806f7e2c4ebdc8d7bddbe27a66e"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "da1d021bbc17420e4c1acb80ed405779207f2d4de6148d4f2ed33d69d02ee378"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @trashcore/baileys

Package

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

Affected ranges

Affected versions

4.*
4.0.0
4.0.1
4.0.2
4.0.5
4.0.6
4.0.7
4.0.8
4.0.9
4.1.0
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.1.9
4.2.0
4.2.1
4.2.2
4.2.3
4.2.4

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/@trashcore/baileys/MAL-2026-18905.json"