CVEvulnerability

CVE-2026-49458

6.1 MEDIUM Published 2026-07-14 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-07-14
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-501, CWE-693, CWE-79

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.

Affected configurations

• cure53 dompurify (< 3.4.6)

Related

Weakness · CWE (3)

  • CWE-501 Trust Boundary Violation weakness
  • CWE-693 Protection Mechanism Failure weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References