CVE-2021-26701: .NET Core Remote Code Execution Vulnerability

CVE-2021-26701 · Severity: low · CVSS 3.1 · Published 2021-04-21

.NET Core Remote Code Execution Vulnerability

Technologies: System.Text.Encodings.Web (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2021-26701 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-26701 being exploited in the wild.
How severe is CVE-2021-26701?
Low severity, with a CVSS score of 3.1, published 21 April 2021.
Which products and versions are affected?
System.Text.Encodings.Web (NuGet) ECOSYSTEM:introduced=4.0.0,fixed=4.5.1.
Is there a fix for CVE-2021-26701?
Yes. System.Text.Encodings.Web (NuGet): upgrade to 4.5.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-26701?
Check whether you run System.Text.Encodings.Web (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

  • System.Text.Encodings.Web (NuGet): upgrade to 4.5.1 or later
    dotnet add package System.Text.Encodings.Web --version 4.5.1

Affected products

  • System.Text.Encodings.Web (NuGet) ECOSYSTEM:introduced=4.0.0,fixed=4.5.1

Identifiers

  • CVE-2021-26701
  • GHSA-ghhp-997w-qr28

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