MAL-2026-6988

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@vite-tab/tab/MAL-2026-6988.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6988
Published
2026-07-08T16:58:42Z
Modified
2026-07-08T17:16:50.955874035Z
Summary
Malicious code in @vite-tab/tab (npm)
Details

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

Source: amazon-inspector (95af865d1cf7d45f2b4c2a73eebcfcd1a1a6aba9a36f33bf8256ef4d7235903c)

@vite-tab/tab republishes Vite's codebase under a different name while impersonating the upstream project: package.json declares bin: { vite: 'bin/vite.js' } (hijacking the vite command on $PATH), author: 'Evan You', repository: git+https://github.com/vitejs/vite.git, and homepage: https://vitejs.dev. Appended to bin/vite.js after the legitimate Vite bootstrap is a self-decoding string table (var _$_4445=(function(k,p){...})("...",4606094)) built via a Fisher-Yates-style scramble with \x25/\x23 substitution markers; all sensitive identifiers (https, get, request, JSON.parse, child_process, spawn, eval, host fragments) are referenced as indices into this table to defeat static review. At runtime the decoded routines perform an HTTPS GET followed by a JSON-RPC POST ({jsonrpc, method, params, id:1}) to a dynamically resolved hostname, base64-decode and XOR-decrypt the response, and pass it to eval(r); a second fetched payload is launched via child_process.spawn(..., {detached:true, windowsHide:true}), with a 30-second throttle. The fetch loop runs every time a developer invokes the hijacked vite command, giving the publisher arbitrary remote code execution on the developer machine with persistence via detached child processes. The remote-hostname JSON-RPC lookup makes the C2 endpoint resistant to static domain blocking.

Database specific
{
    "malicious-packages-origins": [
        {
            "sha256": "62a19bf35a2cc4cea4177b45cf5e3abec489a0e87b1f3a294611d4c9d4bf76aa",
            "id": "IN-MAL-2026-008163",
            "source": "amazon-inspector",
            "import_time": "2026-07-08T17:01:35.87897206Z",
            "modified_time": "2026-07-08T16:58:42Z",
            "versions": [
                "5.7.0"
            ]
        },
        {
            "sha256": "95af865d1cf7d45f2b4c2a73eebcfcd1a1a6aba9a36f33bf8256ef4d7235903c",
            "id": "IN-MAL-2026-008164",
            "source": "amazon-inspector",
            "import_time": "2026-07-08T17:01:35.985361286Z",
            "modified_time": "2026-07-08T16:59:25Z",
            "versions": [
                "3.15.10"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @vite-tab/tab

Package

Name
@vite-tab/tab
View open source insights on deps.dev
Purl
pkg:npm/%40vite-tab/tab

Affected ranges

Affected versions

3.*
3.15.10
5.*
5.7.0

Database specific

indicators
{
    "evidence_files": [
        {
            "path": "package.json",
            "tlsh": "e3a1bc21cda88da31ad424e9ec790142f13485578e65fc18339d57ad0f4e26f327ebae",
            "sha256": "40b7a0e702ec8961f34ab2aa086db538db23c1b605f3af022f373b329450b6f4"
        },
        {
            "path": "bin/vite.js",
            "tlsh": "f7e15c4cf1dc2c20175074d8ecae499b39fac803ee89c594b79cf6486fca411938abb5",
            "sha256": "00dc114cf515233dc0e0a7ac3457377cf0c36842b972b98e5723bfbdb473800d"
        }
    ],
    "package_integrity": [
        {
            "filename": "tab-5.7.0.tgz",
            "hashes": {
                "sha1": "41f173d3d7d462d3c569c179ff569cd6fc541e72",
                "sha512_sri": "sha512-zLAQx+2Rk/5JrrENP56BKJpTsy7acSU1BoAP49BlXRfx0z/LTd+0oavOkQ25yB/u3JMV845mQPJ6bnWOYT67Hg=="
            }
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@vite-tab/tab/MAL-2026-6988.json"
cwes
[
    {
        "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",
        "name": "Embedded Malicious Code"
    }
]