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Medium

Moderate severity vulnerability that affects Microsoft.AspNetCore.All, Microsoft.AspNetCore.Server.Kestrel.Core, Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions, and Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv

  • Disclosed: 16.10.2018
  • Updated: 11.10.2026 11:23

Microsoft made an internal discovery of a security vulnerability in version 2.x of ASP.NET Core where a specially crafted request can cause excess resource consumption in Kestrel.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
.NET (NuGet) Microsoft.AspNetCore.All >= 2.0.0, < 2.0.8 2.0.8
.NET (NuGet) Microsoft.AspNetCore.Server.Kestrel.Core >= 2.0.0, < 2.0.3 2.0.3
.NET (NuGet) Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions >= 2.0.0, < 2.0.3 2.0.3
.NET (NuGet) Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv >= 2.0.0, < 2.0.3 2.0.3

References

CVSS score -
Weakness (CWE)
-
Platform
.NET (NuGet)
Package
Microsoft.AspNetCore.All, Microsoft.AspNetCore.Server.Kestrel.Core, Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions
Disclosed
16.10.2018
Updated
11.10.2026 11:23

Sources and licenses

OSV / GitHub Advisory Database - GHSA-3m2r-q8x3-xmf7 - CC BY 4.0

Vulnerability history: Microsoft.AspNetCore.All

All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (10) in the archive
Total entries
10
First → latest
10.2018 05.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 6
  • Medium 4

Disclosures per year

Severity:
  1. ASP.NET Core Denial of Service Vulnerability
    High · 7.5 CVE-2020-1597 >= 2.1.0, < 2.1.21 2.1.21
  2. Remote code execution in ASP.NET Core
    High CVE-2020-0603 >= 2.1.0, < 2.1.15 2.1.15
  3. Open redirect in ASP.NET Core
    High · 8.8 CVE-2017-11879 >= 2.0.0, < 2.0.3 2.0.3
  4. Denial of service in ASP.NET Core
    High · 7.5 CVE-2019-0564 >= 2.2.0, < 2.2.1, >= 2.1.0, < 2.1.7 2.2.1, 2.1.7
  5. Moderate severity vulnerability that affects Microsoft.AspNetCore.All, Microsoft.AspNetCore.Server.Kestrel.Core, Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions, and Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv this entry
    Medium ghsa-3m2r-q8x3-xmf7 >= 2.0.0, < 2.0.8 2.0.8
  6. Denial of service in ASP.NET Core
    High · 7.5 CVE-2018-8269 >= 2.1.0, < 2.1.13, >= 2.2.0, < 2.2.7 2.1.13, 2.2.7
  7. Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests
    High · 7.5 CVE-2018-8409 >= 2.1.0, < 2.1.4 2.1.4

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