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DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks

🗓️ 15 Jun 2026 19:56:35Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 16 Views

IN PLACE sanitization fails on foreign realm nodes, enabling executable markup via template content and shadow DOM.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
Chainguard
CVE-2026-49458 vulnerabilities
17 Jun 202620:23
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CVE-2026-49458
26 May 202616:03
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CVE
CVE-2026-49458
15 Jun 202619:56
cve
OSV
CGA-X73X-RM46-Q27F
17 Jun 202614:59
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OSV
GHSA-HPCV-96WG-7VJ8 DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks
15 Jun 202619:56
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OSV
MINI-235Q-85GV-MR4W
7 Jul 202601:33
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OSV
MINI-2864-2V5X-73Q4
22 Jun 202611:42
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MINI-2F48-GVFW-HH9Q
1 Jul 202623:43
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MINI-2PM6-76HH-8PG5
1 Jul 202601:31
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MINI-343X-C7HG-9PF2
7 Jul 202601:33
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Node
cure53dompurifyRange3.4.5npm

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15 Jun 2026 19:56Current
5.8Medium risk
Vulners AI Score5.8
EPSS0.00055
16