High severity7.5NVD Advisory· Published Jun 9, 2026· Updated Jun 9, 2026
CVE-2026-45591
CVE-2026-45591
Description
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 8.0.0, < 8.0.28 | 8.0.28 |
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 9.0.0, < 9.0.17 | 9.0.17 |
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 10.0.0, < 10.0.9 | 10.0.9 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 8.0.0, < 8.0.28 | 8.0.28 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 9.0.0, < 9.0.17 | 9.0.17 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 10.0.0, < 10.0.9 | 10.0.9 |
Microsoft.AspNetCore.App.Runtime.osx-arm64NuGet | >= 8.0.0, < 8.0.28 | 8.0.28 |
Microsoft.AspNetCore.App.Runtime.osx-arm64NuGet | >= 9.0.0, < 9.0.17 | 9.0.17 |
Microsoft.AspNetCore.App.Runtime.osx-arm64NuGet | >= 10.0.0, < 10.0.9 | 10.0.9 |
Microsoft.AspNetCore.SignalR.Protocols.MessagePackNuGet | >= 8.0.0, < 8.0.28 | 8.0.28 |
Microsoft.AspNetCore.SignalR.Protocols.MessagePackNuGet | >= 9.0.0, < 9.0.17 | 9.0.17 |
Microsoft.AspNetCore.SignalR.Protocols.MessagePackNuGet | >= 10.0.0, < 10.0.9 | 10.0.9 |
Affected products
53- osv-coords52 versionspkg:apk/chainguard/dotnet-bootstrap-8pkg:apk/chainguard/dotnet-bootstrap-9pkg:apk/wolfi/dotnet-bootstrap-8pkg:apk/wolfi/dotnet-bootstrap-9pkg:bitnami/aspnet-corepkg:bitnami/dotnetpkg:bitnami/dotnet-sdkpkg:nuget/microsoft.aspnetcore.app.runtime.linux-x64pkg:nuget/microsoft.aspnetcore.app.runtime.osx-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.win-x64pkg:nuget/microsoft.aspnetcore.signalr.protocols.messagepackpkg:rpm/almalinux/aspnetcore-runtime-10.0pkg:rpm/almalinux/aspnetcore-runtime-8.0pkg:rpm/almalinux/aspnetcore-runtime-9.0pkg:rpm/almalinux/aspnetcore-runtime-dbg-10.0pkg:rpm/almalinux/aspnetcore-runtime-dbg-8.0pkg:rpm/almalinux/aspnetcore-runtime-dbg-9.0pkg:rpm/almalinux/aspnetcore-targeting-pack-10.0pkg:rpm/almalinux/aspnetcore-targeting-pack-8.0pkg:rpm/almalinux/aspnetcore-targeting-pack-9.0pkg:rpm/almalinux/dotnetpkg:rpm/almalinux/dotnet-apphost-pack-10.0pkg:rpm/almalinux/dotnet-apphost-pack-8.0pkg:rpm/almalinux/dotnet-apphost-pack-9.0pkg:rpm/almalinux/dotnet-hostpkg:rpm/almalinux/dotnet-hostfxr-10.0pkg:rpm/almalinux/dotnet-hostfxr-8.0pkg:rpm/almalinux/dotnet-hostfxr-9.0pkg:rpm/almalinux/dotnet-runtime-10.0pkg:rpm/almalinux/dotnet-runtime-8.0pkg:rpm/almalinux/dotnet-runtime-9.0pkg:rpm/almalinux/dotnet-runtime-dbg-10.0pkg:rpm/almalinux/dotnet-runtime-dbg-8.0pkg:rpm/almalinux/dotnet-runtime-dbg-9.0pkg:rpm/almalinux/dotnet-sdk-10.0pkg:rpm/almalinux/dotnet-sdk-10.0-source-built-artifactspkg:rpm/almalinux/dotnet-sdk-8.0pkg:rpm/almalinux/dotnet-sdk-8.0-source-built-artifactspkg:rpm/almalinux/dotnet-sdk-9.0pkg:rpm/almalinux/dotnet-sdk-9.0-source-built-artifactspkg:rpm/almalinux/dotnet-sdk-aot-10.0pkg:rpm/almalinux/dotnet-sdk-aot-9.0pkg:rpm/almalinux/dotnet-sdk-dbg-10.0pkg:rpm/almalinux/dotnet-sdk-dbg-8.0pkg:rpm/almalinux/dotnet-sdk-dbg-9.0pkg:rpm/almalinux/dotnet-targeting-pack-10.0pkg:rpm/almalinux/dotnet-targeting-pack-8.0pkg:rpm/almalinux/dotnet-targeting-pack-9.0pkg:rpm/almalinux/dotnet-templates-10.0pkg:rpm/almalinux/dotnet-templates-8.0pkg:rpm/almalinux/dotnet-templates-9.0pkg:rpm/almalinux/netstandard-targeting-pack-2.1
< 8.0.129-r0+ 51 more
- (no CPE)range: < 8.0.129-r0
- (no CPE)range: < 9.0.119-r0
- (no CPE)range: < 8.0.129-r0
- (no CPE)range: < 9.0.119-r0
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: >= 8.0.0, < 8.0.28
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.109-1.el8_10
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.109-1.el8_10
- (no CPE)range: < 10.0.109-1.el8_10
- (no CPE)range: < 8.0.128-1.el8_10
- (no CPE)range: < 8.0.128-1.el8_10
- (no CPE)range: < 9.0.118-1.el10_2
- (no CPE)range: < 9.0.118-1.el10_2
- (no CPE)range: < 10.0.109-1.el8_10
- (no CPE)range: < 9.0.118-1.el10_2
- (no CPE)range: < 10.0.109-1.el8_10
- (no CPE)range: < 8.0.128-1.el8_10
- (no CPE)range: < 9.0.118-1.el10_2
- (no CPE)range: < 10.0.9-1.el8_10
- (no CPE)range: < 8.0.28-1.el8_10
- (no CPE)range: < 9.0.17-1.el10_2
- (no CPE)range: < 10.0.109-1.el8_10
- (no CPE)range: < 8.0.128-1.el8_10
- (no CPE)range: < 9.0.118-1.el10_2
- (no CPE)range: < 9.0.118-1.el10_2
Patches
Vulnerability mechanics
References
5News mentions
4- Patch Tuesday - June 2026Rapid7 Blog · Jun 9, 2026
- Microsoft June 2026 Patch Tuesday fixes 3 zero-day, 200 flawsBleepingComputer · Jun 9, 2026
- Microsoft June 2026 Patch Tuesday fixes 6 zero-days, 200 flawsBleepingComputer · Jun 9, 2026
- Microsoft Patch Tuesday June 2026 – 198 Vulnerabilities Fixed, Including 3 Zero-daysCyber Security News · Jun 9, 2026