MAL-2026-5933

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/react-vite-assert/MAL-2026-5933.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5933
Published
2026-06-16T22:20:27Z
Modified
2026-06-16T23:16:56Z
Summary
Malicious code in react-vite-assert (npm)
Details

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

Source: amazon-inspector (746aecfafda9a8f780b53ef40a5697875c52514dfa6ebb29306992ad06128395)

react-vite-assert@1.4.1 executes attacker-controlled JavaScript whenever the package is imported. The main entry transitively loads src/features/extras/config.js, which runs a top-level async IIFE that issues an HTTPS GET to https://www.jsonkeeper.com/b/HXDNM, takes the data.config string from the response, wraps it with new Function('require', s), and invokes it with a createRequire(import.meta.url)-built require — granting the fetched code full Node.js access (filesystem, network, child_process, env). The fetch is retried up to 5 times. The remote URL and request headers are disguised by a fake local process shadow object whose keys are named DEV_API_KEY/DEV_SECRET_KEY/DEV_SECRET_VALUE, where DEV_API_KEY actually holds the paste URL and the other two hold a request header name/value — deliberate misdirection rather than configuration. jsonkeeper.com is an anonymous, mutable paste host: whoever controls /b/HXDNM can change the executed payload at any time without republishing the package. The combination of import-time auto-execution, anonymous mutable code source, eval of fetched bytes with full require, and cover-story variable naming is unambiguous supply-chain attack tradecraft.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-006845",
            "import_time": "2026-06-16T23:03:43.547587086Z",
            "modified_time": "2026-06-16T22:20:27Z",
            "sha256": "746aecfafda9a8f780b53ef40a5697875c52514dfa6ebb29306992ad06128395",
            "source": "amazon-inspector",
            "versions": [
                "1.4.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / react-vite-assert

Package

Name
react-vite-assert
View open source insights on deps.dev
Purl
pkg:npm/react-vite-assert

Affected ranges

Affected versions

1.*
1.4.1

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": "src/features/extras/config.js",
            "sha256": "d2c9cc973ef588acad719b4a4d8dcd6d088f224450b9ef9eeb717b8c9f3d64ba",
            "tlsh": "e601bd8fa1ac140c057013e7bb1be036f662b1ab390381d5775cc7521fb695ca602ede"
        }
    ],
    "package_integrity": [
        {
            "filename": "react-vite-assert-1.4.1.tgz",
            "hashes": {
                "sha1": "d6bd02f9d25ef59286509f280f9ad7fe410373f6",
                "sha512_sri": "sha512-yQR1Zt0WASthdm81PWQVuMCoqnB1jQpWg/rhwloh8wUN7Jc2018x4KgfnHEVrgLsP99bJPUTz5tf1ybIw5otyQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/react-vite-assert/MAL-2026-5933.json"