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

Aliases

GHSA-2q27-vrr7-584g

Published

2026-09-14T00:00:00Z

Modified

2026-10-12T14:00:06Z

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.

-= Per source details. Do not edit below this line.=-

Source: ghsa-malware (9e94c2a29fdc72c1f02612cbc0ecc1ca548a00fb34a8913c11f818a7da7e79de)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

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/"
        ]
    },
    "malicious-packages-origins":  [
        {
            "id":  "GHSA-2q27-vrr7-584g",
            "import_time":  "2026-10-12T13:47:27.001537556Z",
            "modified_time":  "2026-10-12T13:01:20Z",
            "ranges":  [
                {
                    "events":  [
                        {
                            "introduced":  "0"
                        }
                    ],
                    "type":  "SEMVER"
                }
            ],
            "sha256":  "9e94c2a29fdc72c1f02612cbc0ecc1ca548a00fb34a8913c11f818a7da7e79de",
            "source":  "ghsa-malware"
        }
    ]
}

References

https://github.com/advisories/GHSA-2q27-vrr7-584g

Credits

- pkgwarden - FINDER
- - https://pkgwarden.com

Affected packages

npm / webpackbootstrap5

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.0.0

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/webpackbootstrap5/MAL-2026-16201.json"