{"id":"BIT-dotnet-2026-21218","summary":".NET Spoofing Vulnerability","details":"Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.","aliases":["BIT-dotnet-sdk-2026-21218","CVE-2026-21218","GHSA-qvhc-9v3j-5rfw"],"modified":"2026-09-08T08:45:40.651915584Z","published":"2026-02-16T15:58:16.593Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21218"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21218"}],"affected":[{"package":{"name":"dotnet","ecosystem":"Bitnami","purl":"pkg:bitnami/dotnet"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.0.24"},{"introduced":"9.0.0"},{"fixed":"9.0.13"},{"introduced":"10.0.0"},{"fixed":"10.0.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/dotnet/BIT-dotnet-2026-21218.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}],"schema_version":"1.9.0"}