OpenSSF/OSV advisory MAL-2026-12429 confirms this npm version as malicious. The npm package rollup-plugins-check@0.0.2 declares a postinstall script (`node dist/module.js`) that, on `npm install`, performs an HTTPS GET to https://workconfig.vercel.app with `rejectUnauthorized: false` and passes the response body to `new Function('require', data)(require)`, executing the fetched code inside the installer's Node.js process with access to `require`...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in rollup-plugins-check (npm)
Details
The npm package rollup-plugins-check@0.0.2 declares a postinstall script (`node dist/module.js`) that, on `npm install`, performs an HTTPS GET to https://workconfig.vercel.app with `rejectUnauthorized: false` and passes the response body to `new Function('require', data)(require)`, executing the fetched code inside the installer's Node.js process with access to `require`. The remote body is opaque and controlled by whoever owns the endpoint; TLS certificate verification is explicitly disabled, so any on-path attacker can also substitute the payload. The package advertises itself as a rollup polyfill plugin and ships polyfill code copied from rollup-plugin-polyfill-node as cover, while the dropper is appended to the postinstall entry file. The name resembles the legitimate rollup-plugin-polyfill-node package.
Decision reason
OpenSSF Malicious Packages via OSV confirms rollup-plugins-check@0.0.2 as malicious (MAL-2026-12429): Malicious code in rollup-plugins-check (npm)