Malicious code in catwrestlinghuman (npm)
Exploitation and risk
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osv · MAL-2026-16328
Published--- _-= Per source details. Do not edit below this line.=-_ ## 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`.
- Source published
- 21 Sep 2026 03:30:19 UTC
- Source modified
- 21 Sep 2026 04:00:06 UTC
- Saved here
- 24 Oct 2026 13:17:17 UTC
- Source terms
- OSV · upstream source license applies
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.