MAL-2026-12239

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-component-page-loader/MAL-2026-12239.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12239
Published
2026-08-05T08:56:27Z
Modified
2026-08-05T10:06:39.496044138Z
Summary
Malicious code in tinkoff-component-page-loader (npm)
Details

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

Source: amazon-inspector (b6470a0a8983b764a0df6ac4b4f5945f0941e724877192033dace84d55b65fab)

On require() of the package, index.js loads platform.js which unconditionally invokes a setup routine that downloads a platform-specific binary from obfuscated Cloudflare Workers endpoints (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT covert-channel fallback to *.dl.well1.site. Destination hostnames are assembled at runtime via split-string.join() to defeat static string matching. The downloaded bytes are written to /tmp or %TEMP% under disguised names such as dotnetdiag_*.exe and.cache_*, chmodded 0755, and spawned detached via /bin/sh -c '<path> &' or cmd.exe /c start /b. A persistence marker (.analyticsstate) is written and OPTOUT environment variables gate execution for evasion. No hash/signature verification is performed and the downloaded binary is unrelated to the advertised component-loader purpose. The package name typosquats Tinkoff. Result: arbitrary attacker-controlled code executes on the installer's host at require time.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T08:56:27Z",
            "id": "IN-MAL-2026-014479",
            "import_time": "2026-08-05T09:28:16.841385021Z",
            "sha256": "b6470a0a8983b764a0df6ac4b4f5945f0941e724877192033dace84d55b65fab",
            "versions": [
                "20.8.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-component-page-loader

Package

Name
tinkoff-component-page-loader
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-component-page-loader

Affected ranges

Affected versions

20.*
20.8.2

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "tinkoff-component-page-loader-20.8.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-Bfzmu5vqA5W/E/Jw1Fm5yMMT+lIgTsCnPPMo+oQZz9vUfHexyewv5zEmCzvrQqzvOJpiLWahe2HL4bidqg44bQ==",
                "sha1": "f43642966960a96c1585c164dd23846b81e9c277"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "bba1969a15a6701d87b09bf887175819f65be26333808184fbac59985f7352483f2efc",
            "sha256": "916200ade6ac92f79ad3ba029dc04b9510b1f7e96021e7fac2d205632dc96b0b",
            "path": "_platform.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-component-page-loader/MAL-2026-12239.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]