{"answers":{"affected":"9 open source packages ship an affected version, including Microsoft.AspNetCore.SignalR.StackExchangeRedis, aspnet-core and dotnet. It affects 3 products.","exploited":"There is no known exploitation of CVE-2023-35391 in the wild and no public exploit code.","fix":"Upgrade Microsoft.AspNetCore.SignalR.StackExchangeRedis to a fixed version for your release line: 6.0.21 or 7.0.10.","what":"CVE-2023-35391 is a medium-severity vulnerability in Microsoft .Net, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-35391 and fix it if it is affected.\n\nWhat it is: CVE-2023-35391 is a medium-severity vulnerability in Microsoft .Net, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-35391 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet): affected from 6.0.0; fixed in 6.0.21\n- Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet): affected from 6.0.0; fixed in 6.0.21\n- Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet): affected from 7.0.0; fixed in 7.0.10\n- Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet): affected from 7.0.0; fixed in 7.0.10\n- aspnet-core (Bitnami): affected from 2.1.0; fixed in 2.1.40\n- dotnet (Bitnami): affected from 6.0.0; fixed in 6.0.21, 7.0.10\n- dotnet-sdk (Bitnami): affected from 6.0.0; fixed in 6.0.21, 7.0.10\n- Microsoft.AspNetCore.SignalR.Redis (NuGet): affected all versions; fixed in 1.0.40\n- Microsoft.AspNetCore.SignalR.Redis (NuGet): affected all versions; fixed in 1.0.40\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-2023-35391/ (Markdown: https://insights.sbomify.com/CVE-2023-35391/index.md)","id":"CVE-2023-35391","markdown":"https://insights.sbomify.com/CVE-2023-35391/index.md","name":"CVE-2023-35391","record":{"aliases":["BIT-aspnet-core-2023-35391","BIT-dotnet-2023-35391","BIT-dotnet-sdk-2023-35391","CLEANSTART-2025-GD87360","GHSA-j8rm-cm55-qqj6"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"ASP.NET Core SignalR","requires_auth":"none","summary":"An information disclosure vulnerability in ASP.NET Core SignalR and Visual Studio allows attackers to access sensitive data.","user_interaction":"not_required","vuln_class":"information_disclosure"},"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"}],"cvss":{"score":6.2,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C","version":"3.1"},"cwes":[],"description":"ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability","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 SignalR and Visual Studio Information Disclosure Vulnerability","id":"CVE-2023-35391","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"microsoft:.net","products":["microsoft:.net","microsoft:visual_studio_2022"],"type":"information_disclosure","year":"2023"},"n_packages":9,"n_references":1,"next":{"headline":"Microsoft Edge (Chromium-based) Spoofing Vulnerability","id":"CVE-2023-35392"},"packages":[{"ecosystem":"Bitnami","fixed":["2.1.40"],"introduced":["2.1.0"],"last_affected":[],"package":"aspnet-core","purl":"pkg:bitnami/aspnet-core","source":"BIT-aspnet-core-2023-35391"},{"ecosystem":"Bitnami","fixed":["6.0.21","7.0.10"],"introduced":["6.0.0","7.0.0"],"last_affected":[],"package":"dotnet","purl":"pkg:bitnami/dotnet","source":"BIT-dotnet-2023-35391"},{"ecosystem":"Bitnami","fixed":["6.0.21","7.0.10"],"introduced":["6.0.0","7.0.0"],"last_affected":[],"package":"dotnet-sdk","purl":"pkg:bitnami/dotnet-sdk","source":"BIT-dotnet-sdk-2023-35391"},{"ecosystem":"NuGet","fixed":["1.0.40"],"introduced":["0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Redis","purl":null,"source":"GHSA-j8rm-cm55-qqj6"},{"ecosystem":"NuGet","fixed":["1.0.40"],"introduced":["0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.Redis","purl":"pkg:nuget/Microsoft.AspNetCore.SignalR.Redis","source":"GHSA-j8rm-cm55-qqj6"},{"ecosystem":"NuGet","fixed":["6.0.21"],"introduced":["6.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.StackExchangeRedis","purl":null,"source":"GHSA-j8rm-cm55-qqj6"},{"ecosystem":"NuGet","fixed":["6.0.21"],"introduced":["6.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.StackExchangeRedis","purl":"pkg:nuget/Microsoft.AspNetCore.SignalR.StackExchangeRedis","source":"GHSA-j8rm-cm55-qqj6"},{"ecosystem":"NuGet","fixed":["7.0.10"],"introduced":["7.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.StackExchangeRedis","purl":null,"source":"GHSA-j8rm-cm55-qqj6"},{"ecosystem":"NuGet","fixed":["7.0.10"],"introduced":["7.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.SignalR.StackExchangeRedis","purl":"pkg:nuget/Microsoft.AspNetCore.SignalR.StackExchangeRedis","source":"GHSA-j8rm-cm55-qqj6"}],"prev":{"headline":".NET and Visual Studio Remote Code Execution Vulnerability","id":"CVE-2023-35390"},"products":[".NET 6.0",".NET 7.0","ASP.NET Core 2.1","Microsoft Visual Studio 2022 version 17.2","Microsoft Visual Studio 2022 version 17.4","Microsoft Visual Studio 2022 version 17.6"],"published":"2023-08-08","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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-10","vendors":["Microsoft"]},"summary":"An information disclosure vulnerability in ASP.NET Core SignalR and Visual Studio allows attackers to access sensitive data.","url":"https://insights.sbomify.com/CVE-2023-35391/"}