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OpenAdvisories
Malicious MAL-2026-10551

elsisi-cli

npm package · versions 9.9.9

Reported Jul 14, 2026 · Updated Jul 15, 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 (4deec3de3ca46a57023580a81da870e3ce444a691ad6f42f5217abe206ef448a)
package.json declares preinstall and postinstall lifecycle scripts that invoke wget against https://webhook.site/d5968c3d-d0d7-46c4-9305-a726b24fce9c/, passing the installer's current working directory and hostname as query-string parameters ($(pwd), $(hostname)). Both beacons fire automatically on `npm install`. The tarball ships only package.json (371 bytes); the declared main entry index.js is absent and no source, README, or functionality accompanies the lifecycle hooks, so the package's only effect on install is the outbound beacon to the attacker-controlled webhook.site collector.