🛡️ MAL-2026-6826 — rollup-plugin-polyfill-handler

Malicious code in rollup-plugin-polyfill-handler (npm)

Source: amazon-inspector

Package name mimics the rollup-plugin-* ecosystem but exposes no Rollup plugin API. Its exported functions getPlugin, setPlugin, and getPluginExten each issue an HTTP GET to https://rest-icon-handler.store/icons/<token> and pass the response body through JSON.parse followed by eval, executing whatever the remote server returns inside the caller's Node.js process. The destination URL is assembled from split string fragments (protocol/separator/subdomain/domain/path plus numeric token variables) rather than a literal, a lightweight obfuscation to defeat URL scanners. getPlugin also chains into getPluginExten, causing a single call to trigger multiple remote-code fetches. Any consumer that imports this package and invokes an exported function grants the operator of rest-icon-handler.store full remote code execution on the installer's machine. Name and description present the package as a Rollup polyfill helper to lure developers into installing and invoking it.

Source: ghsa-malware

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.