{"answers":{"affected":"4 open source packages ship an affected version, including Microsoft.AspNetCore.Components.WebAssembly.Server.","exploited":"There is no known exploitation of CVE-2026-102870 in the wild and no public exploit code.","fix":"Upgrade Microsoft.AspNetCore.Components.WebAssembly.Server to a fixed version for your release line: 10.0.13 or 11.0.0-rc.2.26478.115.","what":"CVE-2026-102870 is a high-severity code injection vulnerability in Microsoft .NET 10.0 installed on Linux, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-102870 and fix it if it is affected.\n\nWhat it is: CVE-2026-102870 is a high-severity code injection vulnerability in Microsoft .NET 10.0 installed on Linux, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-102870 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.AspNetCore.Components.WebAssembly.Server (NuGet): affected from 10.0.0; fixed in 10.0.13\n- Microsoft.AspNetCore.Components.WebAssembly.Server (NuGet): affected from 10.0.0; fixed in 10.0.13\n- Microsoft.AspNetCore.Components.WebAssembly.Server (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.2.26478.115\n- Microsoft.AspNetCore.Components.WebAssembly.Server (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.2.26478.115\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-2026-102870/ (Markdown: https://insights.sbomify.com/CVE-2026-102870/index.md)","id":"CVE-2026-102870","markdown":"https://insights.sbomify.com/CVE-2026-102870/index.md","name":"CVE-2026-102870","record":{"aliases":["GHSA-g27p-qf6j-c96c","UBUNTU-CVE-2026-102870"],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"ASP.NET Core","requires_auth":"none","summary":"An unauthorized attacker can execute arbitrary code over the network via improper code generation in ASP.NET Core.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.","ecosystems":["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 Remote Code Execution Vulnerability","id":"CVE-2026-102870","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"HKUDS AnyTool Execute Endpoint main.py subprocess.run os command injection","id":"CVE-2026-102874"},"packages":[{"ecosystem":"NuGet","fixed":["10.0.13"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Components.WebAssembly.Server","purl":null,"source":"GHSA-g27p-qf6j-c96c"},{"ecosystem":"NuGet","fixed":["10.0.13"],"introduced":["10.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Components.WebAssembly.Server","purl":"pkg:nuget/Microsoft.AspNetCore.Components.WebAssembly.Server","source":"GHSA-g27p-qf6j-c96c"},{"ecosystem":"NuGet","fixed":["11.0.0-rc.2.26478.115"],"introduced":["11.0.0-preview.1"],"last_affected":[],"package":"Microsoft.AspNetCore.Components.WebAssembly.Server","purl":null,"source":"GHSA-g27p-qf6j-c96c"},{"ecosystem":"NuGet","fixed":["11.0.0-rc.2.26478.115"],"introduced":["11.0.0-preview.1"],"last_affected":[],"package":"Microsoft.AspNetCore.Components.WebAssembly.Server","purl":"pkg:nuget/Microsoft.AspNetCore.Components.WebAssembly.Server","source":"GHSA-g27p-qf6j-c96c"}],"prev":{"headline":".NET and Visual Studio Elevation of Privilege Vulnerability","id":"CVE-2026-102869"},"products":[".NET 10.0 installed on Linux",".NET 10.0 installed on Mac OS",".NET 10.0 installed on Windows",".NET 11.0 installed on Linux",".NET 11.0 installed on Mac OS",".NET 11.0 installed on Windows","Microsoft Visual Studio 2019 version 16.11","Microsoft Visual Studio 2022 version 17.14","Microsoft Visual Studio 2026 version 18.10","Microsoft Visual Studio 2026 version 18.11","Microsoft Visual Studio 2026 version 18.12","Microsoft.AspNetCore.Components.WebAssembly.DevServer","Microsoft.AspNetCore.Components.WebAssembly.Server"],"published":"2026-10-13","related":[],"sources":[{"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["Microsoft"]},"summary":"An unauthorized attacker can execute arbitrary code over the network via improper code generation in ASP.NET Core.","url":"https://insights.sbomify.com/CVE-2026-102870/"}