MAL-2026-12769

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-i18next-instance/MAL-2026-12769.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12769
Published
2026-08-05T13:41:47Z
Modified
2026-08-05T14:37:02.074316215Z
Summary
Malicious code in devplatform-spa-plugin-i18next-instance (npm)
Details

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

Source: amazon-inspector (0a8078abf02317c9e0c0255c48434f68798e80d2282d46acb8a8643e0cdb18c8)

On require/import, index.js silently loads setup.js inside a try/catch. setup.js downloads a platform-specific binary from one of four hardcoded Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), with a base64-chunked DNS TXT fallback on sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru if HTTPS fails. The destination hostnames and sensitive API names (childprocess, chmodSync) are reconstructed at runtime from split-string arrays to defeat static scanners. The downloaded bytes are written to /var/tmp/.cache<rnd> or TEMP/dotnetdiag<rnd>.exe, chmod 0755, then spawned detached via /bin/sh or cmd. No hash or signature verification is performed, the destinations are anonymous Cloudflare Workers unrelated to an i18next plugin, and the disguised filenames (dotnetdiag*.exe,.cache_*) impersonate unrelated system components. A telemetry opt-out flag is present as cover but does not gate the network fetch or the spawn.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-05T14:19:51.343384235Z",
            "id": "IN-MAL-2026-015001",
            "sha256": "0a8078abf02317c9e0c0255c48434f68798e80d2282d46acb8a8643e0cdb18c8",
            "modified_time": "2026-08-05T13:41:47Z",
            "source": "amazon-inspector",
            "versions": [
                "35.5.9"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-spa-plugin-i18next-instance

Package

Name
devplatform-spa-plugin-i18next-instance
View open source insights on deps.dev
Purl
pkg:npm/devplatform-spa-plugin-i18next-instance

Affected ranges

Affected versions

35.*
35.5.9

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-i18next-instance/MAL-2026-12769.json"
indicators 
{
    "evidence_files": [
        {
            "path": "setup.js",
            "tlsh": "c1a1985a15a5700887b0dbe4cb175416f65bf66333c08684fbaca5995f731248272dfc",
            "sha256": "cb06e4a5652c9f8100340e41c1524dc9675bc5e8966f49f12dc03711bf8b5225"
        }
    ],
    "package_integrity": [
        {
            "filename": "devplatform-spa-plugin-i18next-instance-35.5.9.tgz",
            "hashes": {
                "sha512_sri": "sha512-1c+iwkfF/dLeja4EuZkvDeo91Yy2lJbtN4z/ZCFRAw565lwq/Rb/rq1VPnCYZdeLENfGzS01CxSFj68SQ/s8PQ==",
                "sha1": "5890ba30a298829e0d715db417d2e0f1647b48cd"
            }
        }
    ]
}