MAL-2026-16293

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-as-indexed/MAL-2026-16293.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16293
Published
2026-09-18T20:25:47Z
Modified
2026-09-18T20:45:06Z
Summary
Malicious code in chai-as-indexed (npm)
Details

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

Source: amazon-inspector (424ebdaa04d4f7e8ce306f536421ac65d79467e73b05877caac6b72071bdaef9)

The package's main entry index.js loads./lib/initializeCaller, which on require POSTs the full process.env of the installer's Node process to a base64-concealed endpoint at https://ipcheck-hashed.vercel.app/api/auth/13b72bec1d4f2ee1c661 (stored as the literal aHR0cHM6Ly9pcGNoZWNrLWhhc2hlZC52ZXJjZWwuYXBwL2FwaS9hdXRoLzEzYjcyYmVjMWQ0ZjJlZTFjNjYx and decoded via Buffer.from(...,'base64')). The response body is then passed to new Function('require', response.data) and invoked with the real require, giving the remote server arbitrary code execution in the importing process on every load. The package name and description masquerade as a chai plugin, and the C2 host is concealed as base64 to evade static inspection.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-020191",
            "import_time": "2026-09-18T20:38:14.059880859Z",
            "modified_time": "2026-09-18T20:25:47Z",
            "sha256": "424ebdaa04d4f7e8ce306f536421ac65d79467e73b05877caac6b72071bdaef9",
            "source": "amazon-inspector",
            "versions": [
                "7.2.8"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / chai-as-indexed

Package

Name
chai-as-indexed
View open source insights on deps.dev
Purl
pkg:npm/chai-as-indexed

Affected ranges

Affected versions

7.*
7.2.8

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": "lib/initializeCaller.js",
            "sha256": "e384bffa5e90fb424deb80e2d4f1edf3984f7372cd38943eb63812055b807d93",
            "tlsh": "6af0819d34ba223a42ad64f2b61714551113f42137d5d456f3cd42650f4dd4c6771bc8"
        }
    ],
    "package_integrity": [
        {
            "filename": "chai-as-indexed-7.2.8.tgz",
            "hashes": {
                "sha1": "3057a544492379e40ad2761e503492c2623e148a",
                "sha512_sri": "sha512-GJYoViTyWpM0lQTPUBwq5kTrBb4fwVUammsiZdLX/V69R4TsuG8UoXNgQNDp5PIhWrSHZgWgUZq1ngGvRi1lAg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-as-indexed/MAL-2026-16293.json"