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OpenAdvisories
Malicious MAL-2026-10201

bugexploit

npm package · versions 99.9.9

Reported Jul 12, 2026 · Updated Jul 12, 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 (745f81b0c53fa121939d4f71680783860795a394eb30308f6e7e2dcf29401c92)
package.json declares a `postinstall` script that runs `node index.js`. On `npm install`, index.js collects the installer's username (os.userInfo()), hostname (os.hostname()), and current working directory (process.cwd()), then POSTs them as JSON via https.request to the hardcoded endpoint https://webhook.site/cd23dfb8-a0fc-4ff7-818c-f7812fcb4bec. The transmission is unconditional and fires automatically on default install. The destination is a generic webhook-capture service unrelated to any declared package purpose, and the collected fields are host identifiers useful for victim triage / beacon confirmation.