{"answers":{"affected":"27 open source packages ship an affected version, including Microsoft.AspNetCore.App.Runtime.linux-x64, aspnet-core and dotnet. It affects 3 products.","exploited":"There is no known exploitation of CVE-2026-45591 in the wild and no public exploit code.","fix":"Upgrade Microsoft.AspNetCore.App.Runtime.linux-x64 to a fixed version for your release line: 10.0.9, 8.0.28 or 9.0.17.","what":"CVE-2026-45591 is a high-severity denial of service vulnerability in Microsoft .Net, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-45591 and fix it if it is affected.\n\nWhat it is: CVE-2026-45591 is a high-severity denial of service vulnerability in Microsoft .Net, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-45591 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): affected from 10.0.0; fixed in 10.0.9\n- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): affected from 10.0.0; fixed in 10.0.9\n- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): affected from 8.0.0; fixed in 8.0.28\n- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): affected from 8.0.0; fixed in 8.0.28\n- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): affected from 9.0.0; fixed in 9.0.17\n- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): affected from 9.0.0; fixed in 9.0.17\n- aspnet-core (Bitnami): affected from 8.0.0; fixed in 8.0.28, 9.0.17, 10.0.9\n- dotnet (Bitnami): affected from 8.0.0; fixed in 8.0.28, 9.0.17, 10.0.9\n- dotnet-sdk (Bitnami): affected from 8.0.0; fixed in 8.0.28, 9.0.17, 10.0.9\n- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): affected from 10.0.0; fixed in 10.0.9\n- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): affected from 10.0.0; fixed in 10.0.9\n- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): affected from 8.0.0; fixed in 8.0.28\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-45591/ (Markdown: https://insights.sbomify.com/CVE-2026-45591/index.md)","id":"CVE-2026-45591","markdown":"https://insights.sbomify.com/CVE-2026-45591/index.md","name":"CVE-2026-45591","record":{"aliases":["BIT-aspnet-core-2026-45591","BIT-dotnet-2026-45591","BIT-dotnet-sdk-2026-45591","GHSA-f8h2-vmm9-qhj6","MINI-gj7w-8cwc-qmfr","MINI-r89x-qfpj-vwqw","UBUNTU-CVE-2026-45591"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ASP.NET Core","requires_auth":"none","summary":"An unauthorized attacker can cause a denial of service in ASP.NET Core through uncontrolled resource consumption.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":".net","vendor":"microsoft"},{"product":"asp.net_core","vendor":"microsoft"},{"product":"visual_studio_2026","vendor":"microsoft"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.","ecosystems":["Bitnami","NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ASP.NET Core Denial of Service Vulnerability","id":"CVE-2026-45591","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"microsoft:.net","products":["microsoft:.net"],"type":"denial_of_service","year":"2026"},"n_packages":27,"n_references":1,"next":{"headline":"Windows Internet (wininet.dll) Elevation of Privilege Vulnerability","id":"CVE-2026-45592"},"packages":[{"ecosystem":"Bitnami","fixed":["8.0.28","9.0.17","10.0.9"],"introduced":["8.0.0","9.0.0","10.0.0"],"last_affected":[],"package":"aspnet-core","purl":"pkg:bitnami/aspnet-core","source":"BIT-aspnet-core-2026-45591"},{"ecosystem":"Bitnami","fixed":["8.0.28","9.0.17","10.0.9"],"introduced":["8.0.0","9.0.0","10.0.0"],"last_affected":[],"package":"dotnet","purl":"pkg:bitnami/dotnet","source":"BIT-dotnet-2026-45591"},{"ecosystem":"Bitnami","fixed":["8.0.28","9.0.17","10.0.9"],"introduced":["8.0.0","9.0.0","10.0.0"],"last_affected":[],"package":"dotnet-sdk","purl":"pkg:bitnami/dotnet-sdk","source":"BIT-dotnet-sdk-2026-45591"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.linux-x64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.linux-x64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.linux-x64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.linux-x64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.linux-x64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.linux-x64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.linux-x64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.linux-x64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.linux-x64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.osx-arm64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.osx-arm64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.osx-arm64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.osx-arm64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.osx-arm64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.osx-arm64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.osx-arm64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.osx-arm64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.osx-arm64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.win-x64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.win-x64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.win-x64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.win-x64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.win-x64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.win-x64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.win-x64","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.App.Runtime.win-x64","purl":"pkg:nuget/Microsoft.AspNetCore.App.Runtime.win-x64","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["10.0.9"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","purl":"pkg:nuget/Microsoft.AspNetCore.SignalR.Protocols.MessagePack","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["8.0.28"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","purl":"pkg:nuget/Microsoft.AspNetCore.SignalR.Protocols.MessagePack","source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","purl":null,"source":"GHSA-f8h2-vmm9-qhj6"},{"ecosystem":"NuGet","fixed":["9.0.17"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","purl":"pkg:nuget/Microsoft.AspNetCore.SignalR.Protocols.MessagePack","source":"GHSA-f8h2-vmm9-qhj6"}],"prev":{"headline":"Secure Boot Security Feature Bypass Vulnerability","id":"CVE-2026-45588"},"products":[".NET 10.0",".NET 8.0",".NET 9.0","ASP.NET Core 10.0","ASP.NET Core 8.0","ASP.NET Core 9.0","Microsoft Visual Studio 2026 version 18.6"],"published":"2026-06-09","related":[{"cvss_score":9.8,"headline":".NET and Visual Studio Remote Code Execution Vulnerability","id":"CVE-2024-43498","kev_date_added":null,"published":"2024-11-12"},{"cvss_score":9.1,"headline":"NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability","id":"CVE-2024-0057","kev_date_added":null,"published":"2024-01-09"},{"cvss_score":8.8,"headline":".NET Security Feature Bypass Vulnerability","id":"CVE-2026-96957","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":8.8,"headline":".NET and Visual Studio Elevation of Privilege Vulnerability","id":"CVE-2026-69439","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":8.8,"headline":".NET and Visual Studio Remote Code Execution Vulnerability","id":"CVE-2026-71328","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":8.8,"headline":"ASP.NET Core Elevation of Privilege Vulnerability","id":"CVE-2026-47300","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":8.8,"headline":"ASP.NET Core Elevation of Privilege Vulnerability","id":"CVE-2026-47303","kev_date_added":null,"published":"2026-07-14"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-24","vendors":["Microsoft"]},"summary":"An unauthorized attacker can cause a denial of service in ASP.NET Core through uncontrolled resource consumption.","url":"https://insights.sbomify.com/CVE-2026-45591/"}