PatchTheCVEhtmlsanitizer vulnerabilities and fixes
Recent CVEs affecting htmlsanitizer, with upgrade or downgrade steps. 1 tracked.
htmlsanitizer has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-02-04. Highest priority: CVE-2026-25543 (score 26/100).
- CVE-2026-25543 MEDIUM 6.1 UPGRADE HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS
FAQ
How do I fix htmlsanitizer vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is htmlsanitizer being exploited right now?
None of the tracked htmlsanitizer CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which htmlsanitizer CVE should I patch first?
CVE-2026-25543 currently ranks highest (26/100): HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS.