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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Fri, 09 Oct 2026 17:47:34 +0000</lastBuildDate>
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      <title>CVE-2026-25543 — HtmlSanitizer has a bypass via template tag</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-25543</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; mganss HtmlSanitizer&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; mganss HtmlSanitizer&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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