MAL-2026-13467

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/wos-library-ui/MAL-2026-13467.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13467
Published
2026-08-06T16:21:22Z
Modified
2026-08-06T23:50:28.050970617Z
Summary
Malicious code in wos-library-ui (npm)
Details

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

Source: amazon-inspector (3124274f6fcb74cf0805b5545f6952214b90329427f55c616c868f760d592e63)

wos-library-ui@99.0.0 declares scripts.preinstall = 'node poc.js', which auto-runs on npm install. poc.js reads os.hostname(), os.userInfo().username, and process.cwd() and transmits them to the hardcoded Interactsh subdomain csytkgaubytabdgcvgljmgf8o1uj876pg.oast.fun via both a DNS A-record lookup (encoding host/user in the subdomain) and an http.request POST. The package name and inflated 99.0.0 version match the classic dependency-confusion shape targeting an internal 'wos-library-ui' package (self-described as an Inditex WOS PoC): any resolver that prefers the public npm registry will pull this artifact instead of the internal one and execute the beacon, disclosing internal host identifiers and build-path details to a third-party out-of-band collector. Self-labeling as a bug-bounty PoC does not alter the installer-side effect: unconsented install-time exfiltration of installer identity from a namesquatted package on the public registry.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-016678",
            "import_time": "2026-08-06T18:09:04.855031203Z",
            "sha256": "3124274f6fcb74cf0805b5545f6952214b90329427f55c616c868f760d592e63",
            "versions": [
                "99.0.0"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-06T16:21:22Z"
        }
    ]
}
References
Credits

Affected packages

npm / wos-library-ui

Package

Name
wos-library-ui
View open source insights on deps.dev
Purl
pkg:npm/wos-library-ui

Affected ranges

Affected versions

99.*
99.0.0

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "poc.js",
            "tlsh": "7471b6eb41d8557239f2a5c620ba14575117d766761afbf1b48c030f0f86ae88232af7",
            "sha256": "78e3023649063953bc68371416498825ae5fe15c44b4618d49de232d203013d0"
        },
        {
            "path": "package.json",
            "tlsh": "e701cba19650a0331af002e50c74a25a2822cd3fc50bac5e7b99011cd24f9fa427a25f",
            "sha256": "3cfaf8e0204f8e1c6109e197c5f20c4c4c12841154ce6321795cbe0b16950429"
        }
    ],
    "package_integrity": [
        {
            "filename": "wos-library-ui-99.0.0.tgz",
            "hashes": {
                "sha1": "fbeb5855cdf1d910d1daf745d056638d9fbf97ce",
                "sha512_sri": "sha512-rgdWNCnARPKVfD18zqRAqV6txQZr/sq0AAtwzx1dq6uR4B4uxsDv5a4sjjjVnKTdGpFL1jx1pxX4U8nMggbVRQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/wos-library-ui/MAL-2026-13467.json"