{"action":"Upgrade Microsoft.AspNetCore.Components.WebAssembly.Server to 10.0.13 (10.x) or 11.0.0-rc.2.26478.115 (11.x) or later.","affected":[{"fixed":"10.0.13","introduced":"10.0.0"},{"fixed":"11.0.0-rc.2.26478.115","introduced":"11.0.0-preview.1"}],"component":"Microsoft.AspNetCore.Components.WebAssembly.Server","cve_ids":["CVE-2026-102870"],"ecosystem":"NuGet","epss":0.00906,"exploited":false,"fixed_versions":["10.0.13","11.0.0-rc.2.26478.115"],"ghsa_id":"GHSA-g27p-qf6j-c96c","id":"tcs_01M5N8NERMQD42YQVTADPB3WTJ","modified_at":"2026-10-19T19:30:06.255227433Z","published_at":"2026-10-13T20:27:36Z","references":["https://osv.dev/vulnerability/GHSA-g27p-qf6j-c96c","https://github.com/dotnet/aspnetcore/security/advisories/GHSA-g27p-qf6j-c96c","https://nvd.nist.gov/vuln/detail/CVE-2026-102870","https://github.com/dotnet/announcements/issues/445","https://github.com/dotnet/aspnetcore","https://github.com/dotnet/aspnetcore/discussions/69791","https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102870"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GHSA-g27p-qf6j-c96c","url":"https://osv.dev/vulnerability/GHSA-g27p-qf6j-c96c"}],"summary":"Microsoft Security Advisory CVE-2026-102870 - ASP.NET Core Remote Code Execution Vulnerability"}