The devplatform-nx-react npm package at version 35.9.4 includes a malicious loader in its index.js that unconditionally requires a support script. This support script dynamically constructs hostnames to evade detection and downloads an attacker-controlled executable payload from Cloudflare Workers domains and fallback domains under wel1.ru. The payload is reconstructed from base64-encoded DNS TXT records, saved with a randomized filename in a temporary directory, permissioned to be executable, and then executed detached via shell commands on Unix or Windows. The code includes misleading comments and identifiers to disguise its true purpose. There is no integrity check, pinning, or trusted source validation for the downloaded payload, making this a supply chain compromise with remote code execution capabilities.

This malicious package enables remote code execution on any system that installs and loads devplatform-nx-react version 35.9.4. The attacker-controlled payload can run arbitrary commands detached from the main process, potentially leading to full system compromise. Because the malicious code executes automatically on package load without user interaction, it poses a high risk to environments using this package.

No official patch or remediation is currently documented. Users should immediately stop using devplatform-nx-react version 35.9.4 and remove it from their projects. Avoid installing this package until a trusted, verified version is released. Employ supply chain security best practices such as verifying package integrity and using trusted sources. Monitor for updates from the package maintainer or npm security advisories for any official fixes.