MAL-2026-19033

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/wertybailz/MAL-2026-19033.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-19033
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:37Z
Summary
Malicious code in wertybailz (npm)
Details

wertybailz 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) 120363410018949906@newsletter, 120363420757607688@newsletter, 120363425177067841@newsletter, 120363425869049995@newsletter, 120363426748858626@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": "3704f8f5787aa19d4aa783a91a3d7ce22dc5c91df426156e8b1654205d4630d8"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "4757ace51d6f23a66ae761caf4caaa30ea5d48547f1a8ab20db3dc401b632c5b"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "8f658bc0ea894ec074ba502882d8b9f4f8a045cdcd3402e8d99bb5a5c3eac0ae"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "bc6ef3d10cab52ddb022f102294e9d2e008dbee4d65c07f59bce296a83b748ac"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / wertybailz

Package

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

Affected ranges

Affected versions

1.*
1.0.5
1.0.6
1.0.8
1.0.9
1.0.10
1.0.11
1.0.13

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/wertybailz/MAL-2026-19033.json"