npm · Malicious package advisory
Malwareitems-validator
MAL-2026-17235
Malicious code in items-validator (npm)
Details
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_-= Per source details. Do not edit below this line.=-_
## Source: amazon-inspector (a8e49b1abd7c566b17104c5a2823251df2ca253a0fa509d7c19db1c1942ad13d)
On require, index.js invokes initializeDaemon() at top level, which uses spawn('node', [lib/check-items.js], { detached: true, stdio: 'ignore' }) followed by child.unref() to launch a persistent background process independent of the parent. The daemon HTTP-GETs a JSON payload from the hardcoded endpoint https://game.spawnrealm.com/api/item-realtime?key=abcdef123456 and passes payload.code to `new Function('require', 'module', payload.code)`, executing server-supplied JavaScript inside the installer's Node process with full `require` access. An RSA signature check is performed against a public key bundled in the package (crypto-config.js), so the author controls both the signing key and the verifier and the check provides no independent integrity guarantee. Anyone controlling game.spawnrealm.com — including via DNS or TLS — can run arbitrary code as the installing user for the lifetime of the host process. The package is advertised as a validator library, and this remote-code-loader behavior is undisclosed and unrelated to the stated purpose.
Compromised versions (2)
- 1.0.5
- 1.0.4
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.