What is GHSA-CGPW-2GPH-2R9G?

GHSA-CGPW-2GPH-2R9G is a medium-severity security vulnerability in Microsoft.AspNetCore.Server.Kestrel.Core (nuget), affecting versions >= 2.0.0, < 2.0.4. It is fixed in 2.0.4, 2.0.9, 2.1.2.

Which packages are affected by GHSA-CGPW-2GPH-2R9G?

Microsoft.AspNetCore.Server.Kestrel.Core (nuget) versions >= 2.0.0, = 2.0.0, = 2.1.0, < 2.1.2.

Is there a fix for GHSA-CGPW-2GPH-2R9G?

Yes. GHSA-CGPW-2GPH-2R9G is fixed in 2.0.4, 2.0.9, 2.1.2. Upgrade to this version or later.

Is GHSA-CGPW-2GPH-2R9G exploitable, and should I be worried?

Whether GHSA-CGPW-2GPH-2R9G is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether GHSA-CGPW-2GPH-2R9G is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

GHSA-CGPW-2GPH-2R9G

Q: Which packages are affected by GHSA-CGPW-2GPH-2R9G?

Microsoft.AspNetCore.Server.Kestrel.Core (nuget) versions >= 2.0.0, = 2.0.0, = 2.1.0, < 2.1.2.

Q: Is there a fix for GHSA-CGPW-2GPH-2R9G?

Yes. GHSA-CGPW-2GPH-2R9G is fixed in 2.0.4, 2.0.9, 2.1.2. Upgrade to this version or later.

Q: Is GHSA-CGPW-2GPH-2R9G exploitable, and should I be worried?

Whether GHSA-CGPW-2GPH-2R9G is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether GHSA-CGPW-2GPH-2R9G is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix GHSA-CGPW-2GPH-2R9G?

Upgrade: Microsoft.AspNetCore.Server.Kestrel.Core to 2.0.4 or later, Microsoft.AspNetCore.All to 2.0.9 or later, Microsoft.AspNetCore.App to 2.1.2 or later, Microsoft.AspNetCore.Server.Kestrel.Core to 2.1.2 or later, Microsoft.AspNetCore.All to 2.1.2 or later.

Summary

Moderate severity vulnerability that affects Microsoft.AspNetCore.All, Microsoft.AspNetCore.App, and Microsoft.AspNetCore.Server.Kestrel.Core

Microsoft is aware of a denial of service vulnerability in ASP.NET Core when a malformed request is terminated. An attacker who successfully exploited this vulnerability could cause a denial of service attack.

The update addresses the vulnerability by correcting how ASP.NET Core handles such requests.

Impact

Affected versions

Microsoft.AspNetCore.Server.Kestrel.Core (>= 2.0.0, < 2.0.4) Microsoft.AspNetCore.All (>= 2.0.0, < 2.0.9) Microsoft.AspNetCore.App (>= 2.1.0, < 2.1.2) Microsoft.AspNetCore.Server.Kestrel.Core (>= 2.1.0, < 2.1.2) Microsoft.AspNetCore.All (>= 2.1.0, < 2.1.2)

Security releases

Microsoft.AspNetCore.Server.Kestrel.Core → 2.0.4 (nuget) Microsoft.AspNetCore.All → 2.0.9 (nuget) Microsoft.AspNetCore.App → 2.1.2 (nuget) Microsoft.AspNetCore.Server.Kestrel.Core → 2.1.2 (nuget) Microsoft.AspNetCore.All → 2.1.2 (nuget)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade the following packages to resolve this vulnerability:

Microsoft.AspNetCore.Server.Kestrel.Core to 2.0.4 or later; Microsoft.AspNetCore.All to 2.0.9 or later; Microsoft.AspNetCore.App to 2.1.2 or later; Microsoft.AspNetCore.Server.Kestrel.Core to 2.1.2 or later; Microsoft.AspNetCore.All to 2.1.2 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is GHSA-CGPW-2GPH-2R9G? GHSA-CGPW-2GPH-2R9G is a medium-severity security vulnerability in Microsoft.AspNetCore.Server.Kestrel.Core (nuget), affecting versions >= 2.0.0, < 2.0.4. It is fixed in 2.0.4, 2.0.9, 2.1.2.
Which packages are affected by GHSA-CGPW-2GPH-2R9G?
- Microsoft.AspNetCore.Server.Kestrel.Core (nuget) (versions >= 2.0.0, < 2.0.4)
- Microsoft.AspNetCore.All (nuget) (versions >= 2.0.0, < 2.0.9)
- Microsoft.AspNetCore.App (nuget) (versions >= 2.1.0, < 2.1.2)
Is there a fix for GHSA-CGPW-2GPH-2R9G? Yes. GHSA-CGPW-2GPH-2R9G is fixed in 2.0.4, 2.0.9, 2.1.2. Upgrade to this version or later.
Is GHSA-CGPW-2GPH-2R9G exploitable, and should I be worried? Whether GHSA-CGPW-2GPH-2R9G is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether GHSA-CGPW-2GPH-2R9G is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix GHSA-CGPW-2GPH-2R9G?
- Upgrade Microsoft.AspNetCore.Server.Kestrel.Core to 2.0.4 or later
- Upgrade Microsoft.AspNetCore.All to 2.0.9 or later
- Upgrade Microsoft.AspNetCore.App to 2.1.2 or later
- Upgrade Microsoft.AspNetCore.Server.Kestrel.Core to 2.1.2 or later
- Upgrade Microsoft.AspNetCore.All to 2.1.2 or later

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CVE-IDSeverityPackage summary

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