{"action":"Upgrade System.Security.Cryptography.Xml to 8.0.5 (8.x), 9.0.21 (9.x), 10.0.13 (10.x) or 11.0.0-rc.2 (11.x) or later.","affected":[{"fixed":"10.0.13","introduced":"10.0.0"},{"fixed":"11.0.0-rc.2","introduced":"11.0.0-preview.1"},{"fixed":"8.0.5","introduced":"8.0.0"},{"fixed":"9.0.21","introduced":"9.0.0"}],"component":"System.Security.Cryptography.Xml","cve_ids":["CVE-2026-96958"],"ecosystem":"NuGet","epss":0.01203,"exploited":false,"fixed_versions":["10.0.13","11.0.0-rc.2","8.0.5","9.0.21"],"ghsa_id":"GHSA-r955-8q5j-3h83","id":"tcs_01M5N8ZRCDWK16KW5X9F91PT4W","modified_at":"2026-10-19T19:30:13.195903800Z","published_at":"2026-10-13T20:05:52Z","references":["https://osv.dev/vulnerability/GHSA-r955-8q5j-3h83","https://github.com/dotnet/runtime/security/advisories/GHSA-r955-8q5j-3h83","https://nvd.nist.gov/vuln/detail/CVE-2026-96958","https://github.com/dotnet/announcements/issues/488","https://github.com/dotnet/runtime/issues/135709","https://github.com/dotnet/runtime","https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96958"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-r955-8q5j-3h83","url":"https://osv.dev/vulnerability/GHSA-r955-8q5j-3h83"}],"summary":"Microsoft Security Advisory CVE-2026-96958 - .NET and Visual Studio Denial of Service Vulnerability"}