CVE-2026-47423
High
Description
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5.
SeverityHigh
CVSS8.2
Exploit probability—
ProductCure53 Dompurify
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- dompurify3.4.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cure53 dompurify | 3.4.4 | — |
| dompurifynpm | 3.4.4 ≤ v < 3.4.5 | 3.4.5 |
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