Vulnerability Intelligence Report
DOMPurify XSS via `selectedcontent` re-clone
CVE-2026-47423
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.
Cross-Site Scripting (XSS)
No Active Exploit Signals
CVSS Base Score
8.2
HIGH
Exploitability:2.9
Impact Score:4.8
EPSS Probability:0.28%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-79 ↗CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| cure53 | DOMPurify | >= 3.4.4, < 3.4.5 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-05-19T19:37:43 |
| Published | 2026-07-14T19:56:02 |
| Last Updated | 2026-07-16T14:47:21 |
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