MAL-2026-18694

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/solidity-cat/MAL-2026-18694.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18694
Published
2026-10-26T00:00:00Z
Modified
2026-11-05T05:15:05Z
Summary
Malicious code in solidity-cat (npm)
Details

solidity-cat ships index.js, which is byte-identical to the hardhat-hold payload: an obfuscator.io-style loader built on execSync and axios that fetches and runs a second stage. It is a new name for the hardhat-hold (MAL-2026-14246) campaign; the file hashes below match that record's evidence. The package presents itself as an ordinary utility, so the code runs on import or install without the user knowing.

Database specific 
{
    "iocs": {
        "domains": [],
        "files": [
            {
                "digests": {
                    "sha256": "0d4838d9e98f1870b3c44eadb1d0fd94e71526004752160f9db4c7d065e63874"
                },
                "paths": [
                    "index.js"
                ]
            },
            {
                "digests": {
                    "sha256": "4e1c3058548619a9a3916869cd445d73563cbed527add4aca44067445d9c2df5"
                },
                "paths": [
                    "lib/tools.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / solidity-cat

Package

Name
solidity-cat
View open source insights on deps.dev
Purl
pkg:npm/solidity-cat

Affected ranges

Affected versions

2.*
2.0.1

Database specific

cwes 
[
    {
        "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/solidity-cat/MAL-2026-18694.json"