Skip to content
OpenAdvisories
Malicious MAL-2026-16328

catwrestlinghuman

npm package · versions 1.0.0

Reported Sep 21, 2026 · Updated Sep 21, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: amazon-inspector (6c4045339387526c5db90832687d1691c2caddba3b9cb05006022704bf094653)
package.json declares a postinstall hook `node index.js`. index.js is a 111KB blob composed exclusively of the JSFuck character set (`[]()!+`), which decodes at runtime via `Function(<decoded string>)()` to arbitrary JavaScript. A sibling file extension.js (126KB) uses the same JSFuck encoding, indicating a multi-stage opaque payload. The package has no description, no author, and no dependencies, and ships no readable source — the JSFuck encoding is exclusively an obfuscation technique used to hide executable code from scanners and reviewers. Installing this package causes automatic execution of the opaque payload on the installer's machine during `npm install`.