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TI-2026-21123 Aliases CVE-2026-26130GHSA-4vgm-c2wm-63mw

ASP.NET Core Denial of Service Vulnerability

Priority LOW 39CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub, Red Hat and Microsoft. Impact type from Microsoft.

Summary

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03182 88th percentileScored 2026-11-08
Fix Fixed Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): 8.0.25, 9.0.14, 10.0.4Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): 8.0.25, 9.0.14, 10.0.4+10 more productsRed Hat: 14 advisoriesMicrosoft: 3 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftASP.NET Core 10.010.0 to before 10.0.410.0.4Patch availableCNA
MicrosoftASP.NET Core 8.08.0 to before 8.0.258.0.25Patch availableCNA
MicrosoftASP.NET Core 9.09.0 to before 9.0.149.0.14Patch availableCNA
—Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-arm (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-arm (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-arm (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet)8.0.0 to before 8.0.258.0.25Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet)9.0.0 to before 9.0.149.0.14Patch availableGHSA-4vgm-c2wm-63mw
—Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet)10.0.0 to before 10.0.410.0.4Patch availableGHSA-4vgm-c2wm-63mw
  • ASP.NET Core 10.0 VendorMicrosoft Affected 10.0 to before 10.0.4 Fixed in 10.0.4 Patch available CNA
  • ASP.NET Core 8.0 VendorMicrosoft Affected 8.0 to before 8.0.25 Fixed in 8.0.25 Patch available CNA
  • ASP.NET Core 9.0 VendorMicrosoft Affected 9.0 to before 9.0.14 Fixed in 9.0.14 Patch available CNA
  • Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 8.0.0 to before 8.0.25 Fixed in 8.0.25 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 9.0.0 to before 9.0.14 Fixed in 9.0.14 Patch available GHSA-4vgm-c2wm-63mw
  • Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 10.0.0 to before 10.0.4 Fixed in 10.0.4 Patch available GHSA-4vgm-c2wm-63mw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*8.0.0 to before 8.0.25; 9.0.0 to before 9.0.14; 10.0.0 to before 10.0.4VulnerableMicrosoft
  • cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.0.25; 9.0.0 to before 9.0.14; 10.0.0 to before 10.0.4 Vulnerable ·Microsoft

Remediation

  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 10.0.4 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 8.0.25 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 9.0.14 Advisory →
  • Fix · GHSA-4vgm-c2wm-63mw Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 10.0.4 Advisory →

Red Hat 14 advisories

  • RHSA-2026:10085 Released 2026-04-23 · Red Hat rating Important
    .NET 9.0 security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-9.0-source-built-artifacts-9.0.115-1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-9.0-9.0.14-1.el9_6, aspnetcore-runtime-dbg-9.0-9.0.14-1.el9_6, aspnetcore-targeting-pack-9.0-9.0.14-1.el9_6 +12
  • RHSA-2026:10084 Released 2026-04-23 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-8.0-source-built-artifacts-8.0.125-1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-8.0-8.0.25-1.el9_6, aspnetcore-runtime-dbg-8.0-8.0.25-1.el9_6, aspnetcore-targeting-pack-8.0-8.0.25-1.el9_6 +9
  • RHSA-2026:10082 Released 2026-04-23 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) dotnet-sdk-8.0-source-built-artifacts-8.0.125-1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) aspnetcore-runtime-8.0-8.0.25-1.el9_4, aspnetcore-runtime-dbg-8.0-8.0.25-1.el9_4, aspnetcore-targeting-pack-8.0-8.0.25-1.el9_4 +11
Show 11 more Red Hat advisories
  • RHSA-2026:10091 Released 2026-04-23 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-8.0-8.0.25-1.el10_0, aspnetcore-runtime-dbg-8.0-8.0.25-1.el10_0, aspnetcore-targeting-pack-8.0-8.0.25-1.el10_0 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-8.0-source-built-artifacts-8.0.125-1.el10_0
  • RHSA-2026:10083 Released 2026-04-23 · Red Hat rating Important
    .NET 9.0 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-9.0-9.0.14-1.el10_0, aspnetcore-runtime-dbg-9.0-9.0.14-1.el10_0, aspnetcore-targeting-pack-9.0-9.0.14-1.el10_0 +12
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-9.0-source-built-artifacts-9.0.115-1.el10_0
  • RHSA-2026:4456 Released 2026-03-12 · Red Hat rating Important
    .NET 9.0 security update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-9.0-9.0.14-1.el9_7, aspnetcore-runtime-dbg-9.0-9.0.14-1.el9_7, aspnetcore-targeting-pack-9.0-9.0.14-1.el9_7 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-9.0-source-built-artifacts-9.0.115-1.el9_7
  • RHSA-2026:4445 Released 2026-03-12 · Red Hat rating Important
    .NET 10.0 security update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-10.0-10.0.4-1.el9_7, aspnetcore-runtime-dbg-10.0-10.0.4-1.el9_7, aspnetcore-targeting-pack-10.0-10.0.4-1.el9_7 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-10.0-source-built-artifacts-10.0.104-1.el9_7
  • RHSA-2026:4454 Released 2026-03-12 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-8.0-8.0.25-1.el9_7, aspnetcore-runtime-dbg-8.0-8.0.25-1.el9_7, aspnetcore-targeting-pack-8.0-8.0.25-1.el9_7 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-8.0-source-built-artifacts-8.0.125-1.el9_7
  • RHSA-2026:4458 Released 2026-03-12 · Red Hat rating Important
    .NET 10.0 security update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-10.0-10.0.4-1.el8_10, aspnetcore-runtime-dbg-10.0-10.0.4-1.el8_10, aspnetcore-targeting-pack-10.0-10.0.4-1.el8_10 +12
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-10.0-source-built-artifacts-10.0.104-1.el8_10
  • RHSA-2026:4455 Released 2026-03-12 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-8.0-8.0.25-1.el8_10, aspnetcore-runtime-dbg-8.0-8.0.25-1.el8_10, aspnetcore-targeting-pack-8.0-8.0.25-1.el8_10 +9
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-8.0-source-built-artifacts-8.0.125-1.el8_10
  • RHSA-2026:4443 Released 2026-03-12 · Red Hat rating Important
    .NET 9.0 security update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-9.0-9.0.14-1.el8_10, aspnetcore-runtime-dbg-9.0-9.0.14-1.el8_10, aspnetcore-targeting-pack-9.0-9.0.14-1.el8_10 +11
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-9.0-source-built-artifacts-9.0.115-1.el8_10
  • RHSA-2026:4451 Released 2026-03-12 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-8.0-8.0.25-1.el10_1, aspnetcore-runtime-dbg-8.0-8.0.25-1.el10_1, aspnetcore-targeting-pack-8.0-8.0.25-1.el10_1 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-8.0-source-built-artifacts-8.0.125-1.el10_1
  • RHSA-2026:4453 Released 2026-03-12 · Red Hat rating Important
    .NET 10.0 security update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-10.0-10.0.4-1.el10_1, aspnetcore-runtime-dbg-10.0-10.0.4-1.el10_1, aspnetcore-targeting-pack-10.0-10.0.4-1.el10_1 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-10.0-source-built-artifacts-10.0.104-1.el10_1
  • RHSA-2026:4450 Released 2026-03-12 · Red Hat rating Important
    .NET 9.0 security update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-9.0-9.0.14-1.el10_1, aspnetcore-runtime-dbg-9.0-9.0.14-1.el10_1, aspnetcore-targeting-pack-9.0-9.0.14-1.el10_1 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-9.0-source-built-artifacts-9.0.115-1.el10_1

Microsoft 3 updates

  • KB5081278
    Security Update
    • .NET 9.0 installed on Linux 9.0.14
    • .NET 9.0 installed on Mac OS 9.0.14
    • .NET 9.0 installed on Windows 9.0.14
    • ASP.NET Core 9.0 9.0.14
  • KB5081277
    Security Update
    • ASP.NET Core 8.0 8.0.25
  • KB5081276
    Security Update
    • .NET 10.0 installed on Linux 10.0.4
    • .NET 10.0 installed on Mac OS 10.0.4
    • .NET 10.0 installed on Windows 10.0.4
    • ASP.NET Core 10.0 10.0.4

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2026:10082
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:10084, RHSA-2026:10085
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:4450, RHSA-2026:4451, RHSA-2026:4453
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:4443, RHSA-2026:4455, RHSA-2026:4458
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:4445, RHSA-2026:4454, RHSA-2026:4456
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:10083, RHSA-2026:10091
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:10082
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:10084, RHSA-2026:10085
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:4443, RHSA-2026:4455, RHSA-2026:4458
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:4450, RHSA-2026:4451, RHSA-2026:4453
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:4445, RHSA-2026:4454, RHSA-2026:4456
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:10083, RHSA-2026:10091
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Microsoft

Microsoft's page for this CVE →

Impact
Denial of Service
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26130
  2. 2026-10-03 Alias added: GHSA-4vgm-c2wm-63mw

References

Patch 1

Advisory 1

Other 3

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-19596 .NET and Visual Studio Denial of Service Vulnerability KEVCVSS 3.1HIGH 7.5
  • TI-2025-34970 ASP.NET Security Feature Bypass Vulnerability CVSS 3.1CRITICAL 9.9
  • TI-2024-14164 .NET Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2023-18092 ASP.NET Core Denial of Service Vulnerability CVSS 3.1HIGH 8.2
  • TI-2023-18392 ASP.NET Core Security Feature Bypass Vulnerability CVSS 3.1MEDIUM 6.2
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences