MAL-2026-18670

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@axo_cuy/baileyss/MAL-2026-18670.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18670
Published
2026-10-26T00:00:00Z
Modified
2026-11-05T05:15:03Z
Summary
Malicious code in @axo_cuy/baileyss (npm)
Details

@axo_cuy/baileyss 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) 120363412451922209@newsletter (stored base64-encoded), 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": "050d2ba4319861513d38f00dcd99670f6f215736742094e6610d45d5d2b43aba"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "05a23a1aa9221eeb216a62247b3a49a47e672d850e274cdd5f126a72a813b43e"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            },
            {
                "digests": {
                    "sha256": "a72abc445c6f71496fa9cb7e3df892eea508ff00711d199d410c04fe3c9a74f4"
                },
                "paths": [
                    "lib/Socket/newsletter.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @axo_cuy/baileyss

Package

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

Affected ranges

Affected versions

1.*
1.0.0
1.0.1
3.*
3.0.1

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/@axo_cuy/baileyss/MAL-2026-18670.json"