MAL-2026-18877

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@rakku-kun/baileys/MAL-2026-18877.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18877
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:26Z
Summary
Malicious code in @rakku-kun/baileys (npm)
Details

@rakku-kun/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) 120363406005175144@newsletter, 12036421453095412@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": "19eebb59a32742276578706382d41aa195d1402e19e58234e1d3c4f5659dc5f5"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "d163e360b649838b0083e3e3cf8925c30b1570c2bcdd7af2a0e3d1b783908557"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @rakku-kun/baileys

Package

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

Affected ranges

Affected versions

2.*
2.0.2
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.22
2.0.23
2.0.24
2.0.26
2.0.27
2.0.31

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/@rakku-kun/baileys/MAL-2026-18877.json"