MAL-2026-13272

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-vite-plugin-external/MAL-2026-13272.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13272
Aliases
  • GHSA-96g6-hr64-6c4r
Published
2026-08-05T15:05:14Z
Modified
2026-08-06T01:20:41.282188754Z
Summary
Malicious code in devplatform-vite-plugin-external (npm)
Details

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

Source: amazon-inspector (7a591855b5f44a53d20e6258728aeb5c0254fb10dac285f579fffcfc97608061)

The package's main entry (index.js) unconditionally requires./setup on load. setup.js selects an OS/arch-specific endpoint and downloads a binary from a rotating list of Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) whose hostnames are assembled via array-join string splitting to evade static analysis, with a DNS-TXT chunked fallback across sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched bytes are written to a temp path under a disguised name ('dotnetdiag<tag>.exe' on Windows or '.cache<tag>' on POSIX), chmod 0755, and spawned detached via cmd.exe /c start /b or /bin/sh -c "fp &". There is no hash or signature verification of the downloaded payload; the source hosts are attacker-controlled infrastructure unrelated to the package's stated Vite-plugin purpose. Execution is suppressed by DISABLETELEMETRY / ANALYTICSOPTOUT / DONOTTRACK environment variables and cached via a marker file with a ~21329s TTL, framing the behavior as telemetry while dropping and running an opaque binary. Any consumer that requires or imports this package triggers full-host code execution under attacker control.

Source: ghsa-malware (8c85582964f88194107914cd82214c07879ac0ae310f6fd7af6c885b30145a71)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T15:30:16Z",
            "sha256": "7a591855b5f44a53d20e6258728aeb5c0254fb10dac285f579fffcfc97608061",
            "id": "IN-MAL-2026-015724",
            "versions": [
                "35.3.6"
            ],
            "import_time": "2026-08-05T16:13:36.464040981Z"
        },
        {
            "source": "ghsa-malware",
            "modified_time": "2026-08-05T15:05:14Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-96g6-hr64-6c4r",
            "sha256": "8c85582964f88194107914cd82214c07879ac0ae310f6fd7af6c885b30145a71",
            "import_time": "2026-08-06T00:58:53.332117674Z"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-vite-plugin-external

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

35.*
35.3.6

Database specific

cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "setup.js",
            "sha256": "eae6418137ae50bd918bd7202e912719b50aea5155860eead33cb453ca7ecae4",
            "tlsh": "5cb1b76a16a670188bb097e4c7275416f656f6a33380c6c4fb9c95880f77124c3b2efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-vite-plugin-external/MAL-2026-13272.json"