CVE-2020-26293

Description

### Impact If you have explicitly allowed the `<style>` tag, an attacker could craft HTML that includes script after passing through the sanitizer. The default settings disallow the `<style>` tag so there is no risk if you have not explicitly allowed the `<style>` tag. ### Patches The problem has been fixed in version 5.0.372. ### Workarounds Remove the `<style>` tag from the set of allowed tags. ### For more information If you have any questions or comments about this advisory open an issue in https://github.com/mganss/HtmlSanitizer ### Credits This issue was discovered by Michal Bentkowski of Securitum.

Affected packages (1)

• NuGet/HtmlSanitizerfrom 0, < 5.0.372

CVSS scores

References (5)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-26293
• WEBhttps://github.com/mganss/HtmlSanitizer/commit/a3a7602a44d4155d51ec0fbbedc2a49e9c7e2eb8
• WEBhttps://github.com/mganss/HtmlSanitizer/releases/tag/v5.0.372
• WEBhttps://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-8j9v-h2vp-2hhv
• WEBhttps://www.nuget.org/packages/HtmlSanitizer