MAL-2026-12759

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-ability/MAL-2026-12759.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12759
Published
2026-08-05T13:43:14Z
Modified
2026-08-05T14:36:58.014351964Z
Summary
Malicious code in devplatform-spa-plugin-ability (npm)
Details

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

Source: amazon-inspector (c9753b327ec0ed7c7cf204951dd0c1db47db31c79fde8ffad042e8658bb0dc81)

On require of the package, index.js loads bootstrap.js which downloads a platform-specific native binary from anonymous Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT covert-channel fallback under *.dl.wel1.ru (chunk count in c.<domain>, N shards concatenated and base64-decoded into an executable buffer). Hostnames are assembled at runtime by joining split string fragments (e.g. ["oob-worker.cf102-baf.worke","rs.d","ev"].join("")). The fetched binary is written to disguised paths (/var/tmp/.cache<hex>, %TEMP%\dotnetdiag<hex>.exe, /pkg/package.exe|-arm64|loadermac), chmod 0755, and spawned detached via /bin/sh -c or cmd /c start with no hash or signature verification. A lib/telemetry.js decoy file and an.analyticsstate rate-limit stamp plus DISABLETELEMETRY/ANALYTICSOPTOUT/DONOT_TRACK env-var gates provide cover-story framing; the delivered payload is unrelated to the package's stated purpose (an "SPA plugin ability SDK"). Installing or requiring this package executes attacker-controlled code on the installer host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T13:43:14Z",
            "id": "IN-MAL-2026-015012",
            "import_time": "2026-08-05T14:19:52.539492815Z",
            "versions": [
                "35.5.2"
            ],
            "source": "amazon-inspector",
            "sha256": "c9753b327ec0ed7c7cf204951dd0c1db47db31c79fde8ffad042e8658bb0dc81"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-spa-plugin-ability

Package

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

Affected ranges

Affected versions

35.*
35.5.2

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "devplatform-spa-plugin-ability-35.5.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-nsZMI+dANPZ0LLcdN265FMNUDo79O8Bt2atZ9D99Ms0vjj/T6Z67CoouYQrhjKz7IkZSbW0ZRQ721qPDlcNG8A==",
                "sha1": "322cf7b3ad4d51546c22d3065961d8a4ff2558c1"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_bootstrap.js",
            "tlsh": "d9b176aa05a670194bb0d7e4c61b6416f65af6633380c194f79ca9881ff6124c2f2efc",
            "sha256": "c52f2213a5e72bc98e7d70fc20fa4c029bc7492dfa3c6b8d7332e7819684d90e"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-ability/MAL-2026-12759.json"