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.

CVSS 3.1

8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-07-14

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

Affected

• cure53:dompurify

Packages (OSV)

References

• https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea
• https://github.com/cure53/DOMPurify/releases/tag/3.4.5
• https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx
• https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx

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