Malicious Package

Overview css-reading-display-polyfill is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and this...

Malicious code in css-reading-display-polyfill (npm)

css-reading-display-polyfill is described as a CSS polyfill but contains no polyfill code. When its thunderboltRegistry.js is loaded, it runs id, whoami, uname -a, env, ifconfig and cat /etc/hosts and sends the output with the hostname to a webhook.site collector. The file also exports stubs name...

Malicious code in css-reading-display-polyfill (npm)

css-reading-display-polyfill is described as a CSS polyfill but contains no polyfill code. When its thunderboltRegistry.js is loaded, it runs id, whoami, uname -a, env, ifconfig and cat /etc/hosts and sends the output with the hostname to a webhook.site collector. The file also exports stubs name...

MAL-2026-17656 Malicious code in css-reading-display-polyfill (npm)

css-reading-display-polyfill is described as a CSS polyfill but contains no polyfill code. When its thunderboltRegistry.js is loaded, it runs id, whoami, uname -a, env, ifconfig and cat /etc/hosts and sends the output with the hostname to a webhook.site collector. The file also exports stubs name...

MSC-2026-12684

The npm package css-reading-display-polyfill version 1.0.0 contains embedded malicious code in thunderboltRegistry.js. A registry-manifest.min.json maps seven Wix thunderbolt and editor registry bundle names to this file via static.parastorage.com/unpkg so that Wix's renderer loads it. The file...