MAL-2026-16201

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/webpackbootstrap5/MAL-2026-16201.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16201
Published
2026-09-14T00:00:00Z
Modified
2026-09-16T01:30:06Z
Summary
Malicious code in webpackbootstrap5 (npm)
Details

webpackbootstrap5@5.0.0 typosquats bootstrap and ships a disguised in-browser proxy kit. Its bundled loader (index-z2b7r4.js) XOR-decodes a list of endpoints with a fixed key and injects remote scripts from https://dyingefforlessefforlessours.com via document.head.appendChild, then boots a Scramjet/wisp WebSocket proxy that routes page traffic through operator-controlled relays. The loader matches (same sha256) sibling packages webpackbootstrapscripts and @zaka13/thing by the same publisher (zaka13). Harm is browser-side when the asset is served; no install script runs.

Database specific
{
    "iocs": {
        "domains": [
            "dyingefforlessefforlessours.com",
            "wisp.mercurywork.shop"
        ],
        "files": [
            {
                "digests": {
                    "sha256": "b2d1d498f4a8f9e967b850ff6ffbc7d53c35b2aeac75fc115cd89a740a596426"
                },
                "note": "XOR loader injecting remote scripts from dyingefforlessefforlessours.com and building wisp proxy tunnels",
                "paths": [
                    "package/index-z2b7r4.js"
                ],
                "source": "PACKAGE_ARCHIVE"
            }
        ],
        "urls": [
            "https://dyingefforlessefforlessours.com/is512uku",
            "wss://wisp.mercurywork.shop/wisp/",
            "wss://theavancehotel.com/fairs/",
            "wss://science-340154168.b-cdn.net/api/"
        ]
    }
}
Credits

Affected packages

npm / webpackbootstrap5

Package

Name
webpackbootstrap5
View open source insights on deps.dev
Purl
pkg:npm/webpackbootstrap5

Affected ranges

Affected versions

5.*
5.0.0

Database specific

source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/webpackbootstrap5/MAL-2026-16201.json"