MAL-2026-14287

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wizloft/harness-kernel/MAL-2026-14287.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14287
Aliases
  • GHSA-9f63-qfxp-2726
Published
2026-08-19T08:33:41Z
Modified
2026-09-23T01:00:13Z
Summary
Malicious code in @wizloft/harness-kernel (npm)
Details

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

Source: amazon-inspector (b6d73d94752604c9b48dd785c20cee875e268bb52c673bf3817f95000830fa85)

dist/index.js contains an obfuscated top-level async IIFE that executes on import. It queries Ethereum JSON-RPC endpoints (eth.drpc.org, eth.publicnode.com, ethereum-rpc.publicnode.com, and an Etherscan-like API) for the most recent transaction from a hardcoded marker address (0xa322E5f39aDC2490Ef6f0121063e358050D311D3080e), parses the transaction's to field into two IPv4 addresses, HTTP-fetches XOR-encrypted payloads from http://<ip>/0x/ls and http://<ip>:443/0x/cl, XOR-decrypts them, then executes the resulting JavaScript via eval(...) and a detached spawn('node', ['-e', <decrypted>], {detached:true}). The entire loader is packed with obfuscator.io-style transforms (hex _0x identifiers, rotating string array _0x240a, control-flow flattening) that conceal the network-fetch-and-exec chain behind benign-looking exports. On-chain C2 makes the exfil/RCE destination mutable and takedown-resistant; the payload contents are opaque and attacker-controlled.

Source: ghsa-malware (130d79fc85d79e630b6be72735ac9378bcb31264f063b350e0bd392a9dff8fd3)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-018411",
            "import_time":  "2026-08-19T08:48:53.812751851Z",
            "modified_time":  "2026-08-19T08:33:41Z",
            "sha256":  "b6d73d94752604c9b48dd785c20cee875e268bb52c673bf3817f95000830fa85",
            "source":  "amazon-inspector",
            "versions":  [
                "0.1.1-alpha.3"
            ]
        },
        {
            "id":  "GHSA-9f63-qfxp-2726",
            "import_time":  "2026-09-23T00:57:12.946566108Z",
            "modified_time":  "2026-09-23T00:24:46Z",
            "ranges":  [
                {
                    "events":  [
                        {
                            "introduced":  "0"
                        }
                    ],
                    "type":  "SEMVER"
                }
            ],
            "sha256":  "130d79fc85d79e630b6be72735ac9378bcb31264f063b350e0bd392a9dff8fd3",
            "source":  "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / @wizloft/harness-kernel

Package

Name
@wizloft/harness-kernel
View open source insights on deps.dev
Purl
pkg:npm/%40wizloft/harness-kernel

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1.1-alpha.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"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "dist/index.js",
            "sha256":  "9f1d1c07e25d5b396b7f55df0528ab30e468a01977c8dc9cd57d2cd1f43c7154",
            "tlsh":  "51e24184a7d0a440034b6abbbb1bf4e5e96a0cac75844ac7f11dbe84f766327e4f1531"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "harness-kernel-0.1.1-alpha.3.tgz",
            "hashes":  {
                "sha1":  "8f362eda1bf516c074d3d599cba6b4f98f18d080",
                "sha512_sri":  "sha512-O1jwC3sOspfwThpme5f/ivN6gNLZk5DubIRxSLToUYbKqt2YF6y+gZCo2kH/KOnZqIRb6FOUOUCYGmsF0/f32Q=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wizloft/harness-kernel/MAL-2026-14287.json"