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Open WebUI: Stored XSS in Mermaid Markdown Preview

🗓️ 17 Jun 2026 14:14:05Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 8 Views

Stored cross site scripting in Mermaid Markdown preview enables JavaScript execution due to permissive Mermaid security in Open WebUI.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-54011
23 Jun 202616:47
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Circl
CVE-2026-54011
11 Jun 202618:58
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CVE
CVE-2026-54011
23 Jun 202616:47
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Cvelist
CVE-2026-54011 Open WebUI: Stored XSS in Mermaid Markdown Preview
23 Jun 202616:47
cvelist
EUVD
EUVD-2026-38531
23 Jun 202616:47
euvd
NVD
CVE-2026-54011
23 Jun 202618:18
nvd
OSV
GHSA-V8QJ-HXV7-MGVV Open WebUI: Stored XSS in Mermaid Markdown Preview
17 Jun 202614:14
osv
Positive Technologies
PT-2026-50483
17 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-54011 Open WebUI: Stored XSS in Mermaid Markdown Preview
23 Jun 202616:47
vulnrichment
Vulners
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open-webuiRange0.9.5pip

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