# HtmlSanitizer (NuGet) vulnerabilities

Source: https://junglewise.ai/threats/technologies/nuget-htmlsanitizer  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/nuget-htmlsanitizer.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in HtmlSanitizer (NuGet): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-25543, was published on 3 February 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (0 critical, 0 exploited in the wild)

## About HtmlSanitizer (NuGet)

.NET library for cleaning HTML content by removing potentially malicious elements and attributes.

## Latest HtmlSanitizer (NuGet) vulnerabilities

- [CVE-2026-25543: HtmlSanitizer has a bypass via template tag](https://junglewise.ai/threats/cve-2026-25543-htmlsanitizer-has-a-bypass-via-template-tag) (medium, CVSS 4, published 3 Feb 2026)
- [CVE-2023-44390: HtmlSanitizer vulnerable to Cross-site Scripting in Foreign Content](https://junglewise.ai/threats/cve-2023-44390-htmlsanitizer-vulnerable-to-cross-site-scripting-in-foreign) (low, CVSS 3.1, published 4 Oct 2023)
- [CVE-2020-26293: XSS in HtmlSanitizer](https://junglewise.ai/threats/cve-2020-26293-xss-in-htmlsanitizer) (low, CVSS 3.1, published 4 Jan 2021)

## Most severe HtmlSanitizer (NuGet) vulnerabilities

- [CVE-2026-25543: HtmlSanitizer has a bypass via template tag](https://junglewise.ai/threats/cve-2026-25543-htmlsanitizer-has-a-bypass-via-template-tag) (medium, CVSS 4, published 3 Feb 2026)
- [CVE-2020-26293: XSS in HtmlSanitizer](https://junglewise.ai/threats/cve-2020-26293-xss-in-htmlsanitizer) (low, CVSS 3.1, published 4 Jan 2021)
- [CVE-2023-44390: HtmlSanitizer vulnerable to Cross-site Scripting in Foreign Content](https://junglewise.ai/threats/cve-2023-44390-htmlsanitizer-vulnerable-to-cross-site-scripting-in-foreign) (low, CVSS 3.1, published 4 Oct 2023)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other NuGet technologies

- [Microsoft.ChakraCore (NuGet)](https://junglewise.ai/threats/technologies/microsoft-chakracore): 247 vulnerabilities
- [Magick.NET-Q16-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-anycpu): 167 vulnerabilities
- [Magick.NET-Q16-HDRI-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-anycpu): 162 vulnerabilities
- [Magick.NET-Q8-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-anycpu): 162 vulnerabilities
- [Magick.NET-Q16-HDRI-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x86): 160 vulnerabilities
- [Magick.NET-Q8-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-x86): 160 vulnerabilities
- [Magick.NET-Q16-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-x86): 159 vulnerabilities
- [Magick.NET-Q16-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-arm64): 157 vulnerabilities
- [Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-openmp-arm64): 157 vulnerabilities
- [Magick.NET-Q16-HDRI-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x64): 157 vulnerabilities
- [Magick.NET-Q16-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-arm64): 157 vulnerabilities
- [Magick.NET-Q16-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-x64): 157 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "HtmlSanitizer (NuGet) vulnerabilities", https://junglewise.ai/threats/technologies/nuget-htmlsanitizer, 9 November 2026.