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OpenAdvisories
Malicious MAL-2026-14491

chai-as-otc

npm package · versions 1.0.5

Reported Aug 25, 2026 · Updated Aug 25, 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 (cf771adc4f92ba0d79ea56bdcc1e42db57d1bc7421f0dadb0544f619e16b5ca1)
On module load, lib/initializeCaller.js (required from index.js) runs an IIFE that POSTs the full process.env to a base64-obfuscated endpoint decoding to https://ipcheck-hashed.vercel.app/api/auth/6c1d60d35852ef0c05df, then passes the HTTP response body to new Function("require", response.data) and invokes it with require, yielding arbitrary Node code execution on the installer's host at load time. The package is framed as a pino-style logging middleware with a 'Successfully synced!' cover string, but the actual behavior is a covert credential harvester and remote loader.