CVE-2026-114150: ASP.NET Core information disclosure via uninitialized resource

CVE-2026-114150 · Severity: medium · CVSS 5.9 · Published 2026-11-10

ASP.NET Core is a framework used to build web applications and services. An uninitialized resource in ASP.NET Core can be exploited by an attacker over the network to disclose sensitive information, such as configuration data or application secrets, without requiring authentication.

Technologies: Microsoft Asp.Net Core, Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet), Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet), Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet). Vendors: Microsoft, NuGet.

Quick answers

Is CVE-2026-114150 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-114150 being exploited in the wild.
How severe is CVE-2026-114150?
Medium severity, with a CVSS score of 5.9, published 10 November 2026.
Which products and versions are affected?
Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) >= 11.0.0-preview.2.26159.112, <= 11.0.0-rc.3.26522.148, ECOSYSTEM:introduced=11.0.0-preview.2.26159.112,fixed=11.0.0; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) >= 11.0.0-preview.2.26159.112, <= 11.0.0-rc.3.26522.148, ECOSYSTEM:introduced=11.0.0-preview.2.26159.112,fixed=11.0.0; Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) >= 11.0.0-preview.2.26159.112, <= 11.0.0-rc.3.26522.148, ECOSYSTEM:introduced=11.0.0-preview.2.26159.112,fixed=11.0.0; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) >= 11.0.0-preview.2.26159.112, <= 11.0.0-rc.3.26522.148, ECOSYSTEM:introduced=11.0.0-preview.2.26159.112,fixed=11.0.0; and 7 more.
Is there a fix for CVE-2026-114150?
Yes. Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 11.0.0 or later; Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 11.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-114150 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-114150?
Check whether you run Microsoft Asp.Net Core, Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet), Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) or one of the others listed 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

  • Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.osx-arm64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 11.0.0
  • Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 11.0.0 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 11.0.0

Technical details

A use-of-uninitialized-resource vulnerability exists in ASP.NET Core where an attacker can send a crafted network request to trigger exposure of uninitialized memory or data structures. The vulnerability is remotely exploitable without authentication, allowing information disclosure of sensitive application data.

Affected products

  • Microsoft ASP.NET Core

Identifiers

  • CVE-2026-114150
  • GHSA-6vjv-7wm8-p67r

Timeline

  • 2026-11-10: disclosed

References

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