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Vulnerability DatabaseCVE-2026-25543

CVE-2026-25543: 
C# vulnerability analysis and mitigation

HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. Prior to versions 9.0.892 and 9.1.893-beta, if the template tag is allowed, its contents are not sanitized. The template tag is a special tag that does not usually render its contents, unless the shadowrootmode attribute is set to open or closed. This issue has been patched in versions 9.0.892 and 9.1.893-beta.

Source: NVD

Related C# vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

GHSA-mvm6-f9r3-fgfxHIGH7.7
  • C#C#
  • AWSSDK.CloudFront
NoYesMar 27, 2026
CVE-2026-33536MEDIUM5.1
  • C#C#
  • Magick.NET-Q8-x86
NoYesMar 26, 2026
CVE-2026-33535MEDIUM4
  • C#C#
  • Magick.NET-Q16-x86
NoYesMar 26, 2026
GHSA-9r56-3gjq-hqf7LOW3.3
  • C#C#
  • Magick.NET-Q16-HDRI-OpenMP-arm64
NoYesMar 26, 2026
GHSA-6p22-q7w5-33pgLOW3.3
  • C#C#
  • Magick.NET-Q8-OpenMP-x64
NoYesMar 26, 2026

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