GHSA-93VF-569F-22CQ rhukster/dom-sanitizer: SVG <style> tag allows CSS injection via unfiltered url() and @import directives

Summary DOMSanitizer::sanitize allows elements in SVG content but never inspects their text content. CSS url references and @import rules pass through unfiltered, causing the browser to issue HTTP requests to attacker-controlled hosts when the sanitized SVG is rendered. Details In...