CVE-2026-25543

Medium CVSS: 6.3

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.

Vendor

Htmlsanitizer Project

Product

Htmlsanitizer

CWE

CWE-116

Yayın Tarihi

2026-02-04 22:16:00

Güncelleme

2026-02-24 21:29:57

Source Identifier

security-advisories@github.com

KEV Date Added

Kategoriler

CWE-116 Htmlsanitizer MEDIUM Htmlsanitizer Project 2026

Referanslar

https://github.com/mganss/HtmlSanitizer/commit/0ac53dca30ddad963f2b243669a5066933d82b81 https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-j92c-7v7g-gj3f https://www.nuget.org/packages/HtmlSanitizer/9.0.892 https://www.nuget.org/packages/HtmlSanitizer/9.1.893-beta