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GHSA-8j9v-h2vp-2hhv

XSS in HtmlSanitizer

Source: GitHub Advisory Database (reviewed) Low CVE-2020-26293

Packages

EcosystemPackageAffectedFixed in
NuGet HtmlSanitizer < 5.0.372 5.0.372

Details

As written in the advisory (Markdown source, shown as plain text).

### 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.

References

External links from the advisory. They lead to third-party sites.