VulnerabilityAnalyzed
CVE-2026-47423
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG.
HIGH 8.2EPSS 0.41%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
- EPSS
- 0.41% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- cure53/dompurify
- Source
- security-advisories@github.com
References
- https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63eaPatch
- https://github.com/cure53/DOMPurify/releases/tag/3.4.5Release Notes
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvxExploit, Vendor Advisory
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvxExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.