MAL-2026-12705

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-confirm-input/MAL-2026-12705.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12705
Published
2026-08-05T13:52:16Z
Modified
2026-08-05T14:36:34.536994058Z
Summary
Malicious code in devplatform-confirm-input (npm)
Details

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

Source: amazon-inspector (68424c7a93599d9d6d9391e3236d1ebf1d88fdc590b9c20f1ee615295335e5e8)

devplatform-confirm-input@35.9.8 is advertised as a 'confirm input adapter' but on require() executes ext.js, which fetches a platform-specific binary from string-concatenation-obfuscated Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), writes it to a temp path disguised as dotnetdiag_*.exe or a hidden.cache_* file, chmods it 0755, and spawns it detached via cmd.exe or /bin/sh. If HTTPS fails, a DNS-TXT chunked base64 fallback channel over sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru retrieves the payload. C2 hostnames and DNS-fallback domains are split into token arrays and reassembled at runtime, and the dropper uses cover-story identifiers ('.analyticsstate', 'dotnetdiag_', 'Graceful degradation') to evade static analysis. Installing or importing this package results in remote code execution on the installer's host under attacker-controlled bytes.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.9.8"
            ],
            "id": "IN-MAL-2026-015073",
            "import_time": "2026-08-05T14:19:59.110437794Z",
            "modified_time": "2026-08-05T13:52:16Z",
            "source": "amazon-inspector",
            "sha256": "68424c7a93599d9d6d9391e3236d1ebf1d88fdc590b9c20f1ee615295335e5e8"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-confirm-input

Package

Name
devplatform-confirm-input
View open source insights on deps.dev
Purl
pkg:npm/devplatform-confirm-input

Affected ranges

Affected versions

35.*
35.9.8

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-confirm-input/MAL-2026-12705.json"
indicators 
{
    "package_integrity": [
        {
            "filename": "devplatform-confirm-input-35.9.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-2vvaVLpczGDPdfvVgNyOPdKOAOtMUof4DfMfxQzOZ80nI6AXnvk7GAlNgGlyuezoZ7/ix04/xTUcx7O9xo28Bg==",
                "sha1": "e23412e3a8c431b7c1c938803aa7006b661e54ac"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_ext.js",
            "tlsh": "83b1a6aa116630198b70dba5c7179419f55af26367808294f79ca5885ff3224c3f2efc",
            "sha256": "284acc15ed7e164ba928b6be17a92c0a67ca45c38ac06c6c7c96bdb6e57bffd4"
        }
    ]
}