Rollup is a module bundler for JavaScript. Versions prior to 3.29.5 and 4.22.4 are susceptible to a DOM Clobbering vulnerability when bundling scripts with properties from import.meta
(e.g., import.meta.url
) in cjs
/umd
/iife
format. The DOM Clobbering gadget can lead to cross-site scripting (XSS) in web pages where scriptless attacker-controlled HTML elements (e.g., an img
tag with an unsanitized name
attribute) are present. Versions 3.29.5 and 4.22.4 contain a patch for the vulnerability.