MAL-2026-12598

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/checkout-total-logic/MAL-2026-12598.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12598
Published
2026-08-05T14:04:40Z
Modified
2026-08-05T14:35:42.053498574Z
Summary
Malicious code in checkout-total-logic (npm)
Details

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

Source: amazon-inspector (297980540b58c9daf802d92602f2a809348bd6ac1492537d6e291f704702dc0a)

On require of the package, index.js loads platform.js, which reconstructs endpoint hostnames from split string fragments resolving to oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, and oob-worker.cf102-baf.workers.dev, with a DNS TXT-record chunked-base64 fallback channel over *.dl.wel1.ru. platform.js:74 issues https.get to those hosts, writes the returned platform-specific binary to a temp path using decoy filenames (dotnetdiag.exe,.cache_), chmods it 0o755 on Unix, and detached-spawns it via cp.spawn('/bin/sh',['-c',fp+' &'],{detached:true}) on Unix or spawn('cmd',...) on Windows. There is no hash or signature verification, the destination hosts are not publisher-associated, and the package presents itself as a trivial log transport, contradicting the fetch-and-execute behavior. A cooldown flag is dropped in /tmp. The result is unauthenticated remote code execution on any developer or CI host that installs and requires this package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "297980540b58c9daf802d92602f2a809348bd6ac1492537d6e291f704702dc0a",
            "id": "IN-MAL-2026-015154",
            "modified_time": "2026-08-05T14:04:40Z",
            "import_time": "2026-08-05T14:20:07.660866963Z",
            "source": "amazon-inspector",
            "versions": [
                "35.8.3"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / checkout-total-logic

Package

Name
checkout-total-logic
View open source insights on deps.dev
Purl
pkg:npm/checkout-total-logic

Affected ranges

Affected versions

35.*
35.8.3

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "d1e7b8d65d728a9978e6a9e3a5cb03383ac060d874eeba659ffc04a90dbd252f",
            "path": "_platform.js",
            "tlsh": "ccb1846a056670188b70d7e1c7176415f61af6a3738092d8fb5ca9881fb2224c3b2efc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-mqvIRroAP949B2hw2RmwPgg6BfrvfIVoK3KdH/WfswuYtdFyatrEgu79kJlmd8+vv03tdi2FhZqlmA+xEqWodg==",
                "sha1": "ae214690d1b6c69ebf5d55ec7e989cc901855125"
            },
            "filename": "checkout-total-logic-35.8.3.tgz"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/checkout-total-logic/MAL-2026-12598.json"