MAL-2026-4509 Malicious code in celonix-otp-react (npm)
- Package
- celonix-otp-react
- Registry
- npm
What is MAL-2026-4509?
MAL-2026-4509 is a malicious package in celonix-otp-react, published on 21 May 2026.
Official description
The package presents itself as a React OTP component, but its only exported widget hardcodes a single Firebase Realtime Database URL (https://gate-ways-default-rtdb.firebaseio.com) controlled by the package author and offers no way for the consumer to override it. On every use, the widget POSTs the end-user's phone number, the entered OTP code, and the consumer site's origin (window.location.origin) to <author-firebase>/otpRequests.json (index.js line 34, with the URL declared at line 5). Verification then polls <author-firebase>/otpRequests/<requestId>.json and treats data.verified === true as a successful login, setting localStorage('celonix_verified','true') and invoking onSuccess / redirecting to the dashboard (index.js lines 79-84). Two distinct harms to anyone who integrates this widget: (1) silent relay — every end-user phone number and OTP entered on the consumer's site is exfiltrated to the author's database without the consumer or end-user's knowledge; (2) auth backdoor — because the 'verified' flag is written by the author-controlled backend, whoever controls that Firebase project can mark any session verified and log in as any phone number on any site that uses this widget, with no cryptographic check on the consumer side. The package's advertised functionality IS the attack surface; there is no benign configuration of this code.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
What should I do about MAL-2026-4509?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.
Sources
Also known as GHSA-873w-7879-qpxv.