CVE-2020-26293: XSS in HtmlSanitizer

CVE-2020-26293 · Severity: low · CVSS 3.1 · Published 2021-01-04

XSS in HtmlSanitizer

Technologies: HtmlSanitizer (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2020-26293 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-26293 being exploited in the wild.
How severe is CVE-2020-26293?
Low severity, with a CVSS score of 3.1, published 4 January 2021.
Which products and versions are affected?
HtmlSanitizer (NuGet) ECOSYSTEM:introduced=0,fixed=5.0.372.
Is there a fix for CVE-2020-26293?
Yes. HtmlSanitizer (NuGet): upgrade to 5.0.372 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-26293?
Check whether you run HtmlSanitizer (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • HtmlSanitizer (NuGet): upgrade to 5.0.372 or later
    dotnet add package HtmlSanitizer --version 5.0.372

Affected products

  • HtmlSanitizer (NuGet) ECOSYSTEM:introduced=0,fixed=5.0.372

Identifiers

  • CVE-2020-26293
  • GHSA-8j9v-h2vp-2hhv

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