MAL-2026-13208

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/eacq-auth/MAL-2026-13208.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13208
Published
2026-08-05T15:05:59Z
Modified
2026-08-05T15:53:13.758853734Z
Summary
Malicious code in eacq-auth (npm)
Details

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

Source: amazon-inspector (44896d37931bf7bf16a6061be03cc11eaaf4dbf05780ac9e2ff49a1990986eb7)

index.js exports a benign TokenManager facade but silently require('./_bootstrap') in a try/catch on load. bootstrap.js selects a platform-specific asset, downloads an unverified binary from hardcoded Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev) — with a DNS-TXT chunked-fetch fallback under *.dl.wel1.ru — writes it to /tmp or %TEMP% under a disguised name (e.g. dotnetdiag_,.cache_), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe start /b. Destination hostnames are reconstructed by array.join to evade static string matching. Executes at require() time, so a normal npm install + any downstream import runs the fetched binary on the installer host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T15:05:59Z",
            "source": "amazon-inspector",
            "sha256": "44896d37931bf7bf16a6061be03cc11eaaf4dbf05780ac9e2ff49a1990986eb7",
            "import_time": "2026-08-05T15:19:58.231130888Z",
            "id": "IN-MAL-2026-015566",
            "versions": [
                "35.4.8"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / eacq-auth

Package

Name
eacq-auth
View open source insights on deps.dev
Purl
pkg:npm/eacq-auth

Affected ranges

Affected versions

35.*
35.4.8

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "eacq-auth-35.4.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-d5ZLB8aYN+aF4OUU7zwSioSs+LUQ1sZD8MXfpbD6/QMXzofTUlkp6OgCOf3QlGmtgSzCU56aMTuJMsCL6FUllA==",
                "sha1": "ebe6112f44babf84f85ffa04e35ceb7d551cea61"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "78a1b86615ab701987b0abe48b17541af65be6633781c1ccfb5c65880f7316883b2efc",
            "sha256": "775a9d6bd9decd3c99a64596d20f1be62c7199004778c68e60b6d7f045bf8508",
            "path": "_bootstrap.js"
        },
        {
            "tlsh": "a801805207f4b129cae853b79f23c003fd15e076168546687748a3ee9ef58101366cb8",
            "sha256": "7327033a0f82058f76fc797272e84fdf79a3bab61f3f277cedf8f3c1189a2767",
            "path": "index.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/eacq-auth/MAL-2026-13208.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]