MAL-2026-18919

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@yemo-dev/yebail/MAL-2026-18919.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18919
Published
2026-10-27T00:00:00Z
Modified
2026-11-09T23:15:29Z
Summary
Malicious code in @yemo-dev/yebail (npm)
Details

@yemo-dev/yebail 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/messages-recv.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363408975923153@newsletter, 120363421171049265@newsletter (stored as character-code arrays), 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": "38da17bfd3c9805e8d60c765890d6fee4cc9777aca592ef448410a70b6a89875"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "49fe5eff4c2ab69e6757b4eafd39dbf13445b2b2e003782b319b6cc1f3b7a324"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "8007b347a931faf7e763824063cbf9cbbc46080e6d527145fa46d1750fa84dec"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "86c454763a17c1605b8b73bc9d485f89c2912349ace3ff39bfbaf8310d7d7823"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "a065d127382b5c24241b340473bbecbf46c5a4ebad40cd5b71eb3260806307fe"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "e3bb0e9cce78ca4053307f0ef33c0567d15e64f9354686d1c58d3abd99644aa5"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "e67db0411e5aa68d38ebcfa477a32fe25fd339aed18ee1b929e8d6c69187d72d"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "f8e962ba9af2b6a9f340e79b3958e3004226b1b417678fb25ce249e614048418"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            },
            {
                "digests": {
                    "sha256": "fd9328b2136dfa1e334f78e18327b71e38b770e008c89353d5faad43711f5421"
                },
                "paths": [
                    "lib/Socket/messages-recv.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / @yemo-dev/yebail

Package

Name
@yemo-dev/yebail
View open source insights on deps.dev
Purl
pkg:npm/%40yemo-dev/yebail

Affected ranges

Affected versions

1.*
1.0.0
1.0.1
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.2.0
1.2.1
2.*
2.0.0
2.0.1
2.0.2
3.*
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
4.*
4.0.0
4.0.1
4.0.2
4.0.3
4.0.4
4.0.5
4.1.0
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.2.0
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
4.2.10
4.2.11
4.2.12

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/@yemo-dev/yebail/MAL-2026-18919.json"