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fix: strip <style> tags from quoted HTML to prevent CSS leaking into … #3

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Merged
saiththerobo merged 1 commit into from
Jun 2, 2026
Merged

fix: strip <style> tags from quoted HTML to prevent CSS leaking into … #3

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4 changes: 3 additions & 1 deletion frontend/src/components/ComposeModal.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -335,7 +335,9 @@ export default function ComposeModal() {
// Initialise quoted HTML contentEditable once on mount (ref-based to avoid React cursor conflicts)
useEffect(() => {
if (quotedHtmlRef.current && quotedBodyHtml) {
quotedHtmlRef.current.innerHTML = DOMPurify.sanitize(quotedBodyHtml);
// FORBID_TAGS: strip <style> blocks — marketing emails use global rules like
// "div { margin: 0 !important }" that leak out of contentEditable into the app UI.
quotedHtmlRef.current.innerHTML = DOMPurify.sanitize(quotedBodyHtml, { FORBID_TAGS: ['style'] });
}
}, []); // eslint-disable-line react-hooks/exhaustive-deps

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