{"answers":{"affected":"11 open source packages ship an affected version, including Microsoft.AspNetCore.Server.IISIntegration, aspnet-core and dotnet. It affects 4 products.","exploited":"There is no known exploitation of CVE-2026-69304 in the wild and no public exploit code.","fix":"Upgrade Microsoft.AspNetCore.Server.IISIntegration to a fixed version for your release line: 10.0.12, 11.0.0-rc.1, 8.0.31 or 9.0.20.","what":"CVE-2026-69304 is a medium-severity denial of service vulnerability in Microsoft .Net, published on 8 Sep 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-2026-69304 and fix it if it is affected.\n\nWhat it is: CVE-2026-69304 is a medium-severity denial of service vulnerability in Microsoft .Net, published on 8 Sep 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-2026-69304 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 10.0.0; fixed in 10.0.12\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 10.0.0; fixed in 10.0.12\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.1\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.1\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 8.0.0; fixed in 8.0.31\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 8.0.0; fixed in 8.0.31\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 9.0.0; fixed in 9.0.20\n- Microsoft.AspNetCore.Server.IISIntegration (NuGet): affected from 9.0.0; fixed in 9.0.20\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 8.0.31, 9.0.20, 10.0.12\n- dotnet-sdk (Bitnami): affected from 8.0.0; fixed in 8.0.31, 9.0.20, 10.0.12\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-2026-69304/ (Markdown: https://insights.sbomify.com/CVE-2026-69304/index.md)","id":"CVE-2026-69304","markdown":"https://insights.sbomify.com/CVE-2026-69304/index.md","name":"CVE-2026-69304","record":{"aliases":["BELL-CVE-2026-69304","BIT-aspnet-core-2026-69304","BIT-dotnet-2026-69304","BIT-dotnet-sdk-2026-69304","GHSA-8cp2-47hg-mfgh","MINI-3787-8vm6-3g39","MINI-qhwr-j52q-w85j","RHSA-2026:74947","RHSA-2026:74950","UBUNTU-CVE-2026-69304"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ASP.NET Core framework","requires_auth":"none","summary":"An unauthorized attacker can cause a denial of service in ASP.NET Core by exploiting improper handling of highly compressed data.","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_2022","vendor":"microsoft"},{"product":"visual_studio_2026","vendor":"microsoft"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-409","name":"Improper Handling of Highly Compressed Data (Data Amplification)"}],"description":"Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.","ecosystems":["Bitnami","NuGet","Red Hat:hummingbird:1"],"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-2026-69304","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"microsoft:.net","products":["microsoft:.net","microsoft:visual_studio_2022"],"type":"denial_of_service","year":"2026"},"n_packages":39,"n_references":1,"next":{"headline":"Microsoft Windows Search Component Elevation of Privilege Vulnerability","id":"CVE-2026-69305"},"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-2026-69304"},{"ecosystem":"Bitnami","fixed":["8.0.31","9.0.20","10.0.12"],"introduced":["8.0.0","9.0.0","10.0.0"],"last_affected":[],"package":"dotnet","purl":"pkg:bitnami/dotnet","source":"BIT-dotnet-2026-69304"},{"ecosystem":"Bitnami","fixed":["8.0.31","9.0.20","10.0.12"],"introduced":["8.0.0","9.0.0","10.0.0"],"last_affected":[],"package":"dotnet-sdk","purl":"pkg:bitnami/dotnet-sdk","source":"BIT-dotnet-sdk-2026-69304"},{"ecosystem":"NuGet","fixed":["10.0.12"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":null,"source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["10.0.12"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":"pkg:nuget/Microsoft.AspNetCore.Server.IISIntegration","source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["11.0.0-rc.1"],"introduced":["11.0.0-preview.1"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":null,"source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["11.0.0-rc.1"],"introduced":["11.0.0-preview.1"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":"pkg:nuget/Microsoft.AspNetCore.Server.IISIntegration","source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["8.0.31"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":null,"source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["8.0.31"],"introduced":["8.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":"pkg:nuget/Microsoft.AspNetCore.Server.IISIntegration","source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["9.0.20"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":null,"source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"NuGet","fixed":["9.0.20"],"introduced":["9.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Server.IISIntegration","purl":"pkg:nuget/Microsoft.AspNetCore.Server.IISIntegration","source":"GHSA-8cp2-47hg-mfgh"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-runtime-8.0","purl":"pkg:rpm/redhat/aspnetcore-runtime-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-runtime-9.0","purl":"pkg:rpm/redhat/aspnetcore-runtime-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-runtime-dbg-8.0","purl":"pkg:rpm/redhat/aspnetcore-runtime-dbg-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-runtime-dbg-9.0","purl":"pkg:rpm/redhat/aspnetcore-runtime-dbg-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-targeting-pack-8.0","purl":"pkg:rpm/redhat/aspnetcore-targeting-pack-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-targeting-pack-9.0","purl":"pkg:rpm/redhat/aspnetcore-targeting-pack-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-apphost-pack-8.0","purl":"pkg:rpm/redhat/dotnet-apphost-pack-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-apphost-pack-9.0","purl":"pkg:rpm/redhat/dotnet-apphost-pack-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-hostfxr-8.0","purl":"pkg:rpm/redhat/dotnet-hostfxr-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-hostfxr-9.0","purl":"pkg:rpm/redhat/dotnet-hostfxr-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-8.0","purl":"pkg:rpm/redhat/dotnet-runtime-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-9.0","purl":"pkg:rpm/redhat/dotnet-runtime-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-dbg-8.0","purl":"pkg:rpm/redhat/dotnet-runtime-dbg-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-dbg-9.0","purl":"pkg:rpm/redhat/dotnet-runtime-dbg-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.130-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-8.0","purl":"pkg:rpm/redhat/dotnet-sdk-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.130-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-8.0-source-built-artifacts","purl":"pkg:rpm/redhat/dotnet-sdk-8.0-source-built-artifacts","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-9.0","purl":"pkg:rpm/redhat/dotnet-sdk-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-9.0-source-built-artifacts","purl":"pkg:rpm/redhat/dotnet-sdk-9.0-source-built-artifacts","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-aot-9.0","purl":"pkg:rpm/redhat/dotnet-sdk-aot-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.130-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-dbg-8.0","purl":"pkg:rpm/redhat/dotnet-sdk-dbg-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-dbg-9.0","purl":"pkg:rpm/redhat/dotnet-sdk-dbg-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.30-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-targeting-pack-8.0","purl":"pkg:rpm/redhat/dotnet-targeting-pack-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.18-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-targeting-pack-9.0","purl":"pkg:rpm/redhat/dotnet-targeting-pack-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.130-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-templates-8.0","purl":"pkg:rpm/redhat/dotnet-templates-8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet-templates-9.0","purl":"pkg:rpm/redhat/dotnet-templates-9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:8.0.130-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet8.0","purl":"pkg:rpm/redhat/dotnet8.0","source":"RHSA-2026:74950"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"dotnet9.0","purl":"pkg:rpm/redhat/dotnet9.0","source":"RHSA-2026:74947"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:9.0.119-2.1.hum1"],"introduced":["0"],"last_affected":[],"package":"netstandard-targeting-pack-2.1","purl":"pkg:rpm/redhat/netstandard-targeting-pack-2.1","source":"RHSA-2026:74947"}],"prev":{"headline":"Push Message Routing Service Information Disclosure Vulnerability","id":"CVE-2026-69303"},"products":[".NET 10.0",".NET 8.0",".NET 9.0","ASP.NET Core 10.0","ASP.NET Core 11.0","ASP.NET Core 8.0","ASP.NET Core 9.0","Microsoft Visual Studio 2022 version 17.14","Microsoft Visual Studio 2026 version 18.9"],"published":"2026-09-08","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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["Microsoft"]},"summary":"An unauthorized attacker can cause a denial of service in ASP.NET Core by exploiting improper handling of highly compressed data.","url":"https://insights.sbomify.com/CVE-2026-69304/"}