MAL-2026-13499

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/delivery-ci-codeceptjs-fork/MAL-2026-13499.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13499
Published
2026-08-07T12:13:37Z
Modified
2026-08-07T12:35:08Z
Summary
Malicious code in delivery-ci-codeceptjs-fork (npm)
Details

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

Source: amazon-inspector (5b04b71321d5c862e9bf8510e16b31cb4a78df5f06cd9c773265f7de475ebd06)

On require of the package's main entry, runtime.js reconstructs attacker-controlled hostnames via Array.join string-splitting (oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev) and downloads a platform-specific binary over HTTPS. The fetched bytes are written to /tmp or %TEMP% under disguised names (.cache on POSIX, dotnet_diag_.exe on Windows), chmod'd 755, and spawned detached via spawn('/bin/sh', ['-c', path+' &'], {detached:true}) or cmd.exe /c start /b. A DNS-TXT covert-channel fallback reassembles base64-encoded payload bytes from chunked TXT records under *.dl.wel1.ru (also string-split as ['sdk.','dl.','wel','1.r','u'].join('')). A second copy of the dropper machinery is bundled in lib/telemetry.js, framed as an 'Analytics SDK', with the same require('child_'+'process') / fs'chmod'+'Sync' / detached-shell-spawn primitives and base64 chunk assembly. Hostname obfuscation, opaque unverified payload, disguised staging paths mimicking legitimate diagnostics binaries, and detached execution together establish install/load-time remote code execution against any installer that imports the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-016891",
            "import_time": "2026-08-07T12:23:25.973941151Z",
            "modified_time": "2026-08-07T12:13:37Z",
            "sha256": "5b04b71321d5c862e9bf8510e16b31cb4a78df5f06cd9c773265f7de475ebd06",
            "source": "amazon-inspector",
            "versions": [
                "35.4.5"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / delivery-ci-codeceptjs-fork

Package

Name
delivery-ci-codeceptjs-fork
View open source insights on deps.dev
Purl
pkg:npm/delivery-ci-codeceptjs-fork

Affected ranges

Affected versions

35.*
35.4.5

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_runtime.js",
            "sha256": "6693b7374c5b82239c788acb2b12bc403fb71a0502564989fe090855c9b69dff",
            "tlsh": "56a1869a1566711c4bb0e7e4c617982af61af6633780c284f79c59984fb352483b2efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "f0b28e6358f7dbc77353bf76cd83c3af59ef1bb2731e931259788bc3f9e11063",
            "tlsh": "78835055566a242186b2b378df234107ff3685272642429dbafc82dc1fbd72092a5ffc"
        }
    ],
    "package_integrity": [
        {
            "filename": "delivery-ci-codeceptjs-fork-35.4.5.tgz",
            "hashes": {
                "sha1": "2cb9db58817a004194e5c17c35781cdec87920ef",
                "sha512_sri": "sha512-7k8xdyC9GG9TWy0z/pvCOWb6VE0giPGN2e70rT8sPf8RBkof+Af1F/py/y2xNHbIHayNOhZ4h330Qy8T6g2VQA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/delivery-ci-codeceptjs-fork/MAL-2026-13499.json"