DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.7, DOMPurify IN_PLACE sanitization could skip shadow contents attached to an element inside <template>.content, allowing attacker-controlled markup such as event handlers, JavaScript URLs, or scripts to survive and execute when an application cloned and inserted the sanitized template. This issue is fixed in version 3.4.7.
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History
Wed, 15 Jul 2026 16:00:00 +0000
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Cure53
Cure53 dompurify |
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Cure53
Cure53 dompurify |
Wed, 15 Jul 2026 12:15:00 +0000
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threat_severity
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cvssV3_1
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Tue, 14 Jul 2026 20:30:00 +0000
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| Description | DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.7, DOMPurify IN_PLACE sanitization could skip shadow contents attached to an element inside <template>.content, allowing attacker-controlled markup such as event handlers, JavaScript URLs, or scripts to survive and execute when an application cloned and inserted the sanitized template. This issue is fixed in version 3.4.7. | |
| Title | DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside <template>.content | |
| Weaknesses | CWE-79 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-07-14T20:02:46.263Z
Updated: 2026-07-14T20:02:46.263Z
Reserved: 2026-06-02T18:30:51.281Z
Link: CVE-2026-49978
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