{"id":"CVE-2026-102870","title":"Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.","summary":"Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-94"],"vendor":"Microsoft","product":"Microsoft.AspNetCore.Components.WebAssembly.Server","affected":["Microsoft.AspNetCore.Components.WebAssembly.Server >= 10.0.0, <= 10.0.12","Microsoft.AspNetCore.Components.WebAssembly.Server >= 11.0.0-preview.1, <= 11.0.0-rc.1"],"patched":["Microsoft.AspNetCore.Components.WebAssembly.Server 10.0.13","Microsoft.AspNetCore.Components.WebAssembly.Server 11.0.0-rc.2.26478.115"],"published":"2026-10-13","updated":"2026-10-14","sourceUpdated":"2026-10-14T04:18:08.113","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102870","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102870","label":"secure@microsoft.com"},{"url":"https://github.com/dotnet/aspnetcore/security/advisories/GHSA-g27p-qf6j-c96c"},{"url":"https://github.com/dotnet/announcements/issues/445"},{"url":"https://github.com/dotnet/aspnetcore/discussions/69791"},{"url":"https://github.com/advisories/GHSA-g27p-qf6j-c96c"}],"tags":["nvd","ghsa","nuget"],"aliases":["GHSA-g27p-qf6j-c96c"],"ecosystem":"nuget","ingestedAt":"2026-10-13T19:43:28.900Z","slug":"CVE-2026-102870","body":"## Overview\n\nImproper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-102870)\n\nAffected packages:\n\n- `Microsoft.AspNetCore.Components.WebAssembly.Server >= 10.0.0, <= 10.0.12`\n- `Microsoft.AspNetCore.Components.WebAssembly.Server >= 11.0.0-preview.1, <= 11.0.0-rc.1`\n\nPatched in:\n\n- `Microsoft.AspNetCore.Components.WebAssembly.Server 10.0.13`\n- `Microsoft.AspNetCore.Components.WebAssembly.Server 11.0.0-rc.2.26478.115`\n\nSource: https://github.com/advisories/GHSA-g27p-qf6j-c96c","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}