CVE-2026-25543
Description
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.
Risk Information
Base Score
6.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score
Exploitation Probability
0.045
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Vulnerabilities CVE-2026-25543 are fixed in Nuget - HtmlSanitizer 9.0.892 | Windows |
| Vulnerabilities CVE-2026-25543 are fixed in Nuget - HtmlSanitizer 9.1.893 | Windows |
| Vulnerabilities CVE-2026-25543 are fixed in Nuget - HtmlSanitizer for Linux 9.0.892 | Linux |
| Vulnerabilities CVE-2026-25543 are fixed in Nuget - HtmlSanitizer for Linux 9.1.893 | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234