{"id":"CVE-2019-12250","details":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host","modified":"2026-04-10T04:12:35.497189Z","published":"2019-05-21T16:29:01.877Z","references":[{"type":"EVIDENCE","url":"https://github.com/IdentityServer/IdentityServer4/issues/3279"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/identityserver/identityserver4","events":[{"introduced":"0"},{"last_affected":"44651bea9b02c992902639b21205f433aad47d03"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.4.0"}]}}],"versions":["1.0.0-beta1","1.0.0-rc1","1.0.0-rc1-update1","1.0.0-rc1-update2","1.0.0-rc2","1.0.0-rc3","1.0.0-rc4","1.0.1","1.0.2","1.1.0","1.1.1","1.2","1.2.0","1.2.1","1.3.0","1.3.1","1.4.1","1.4.2","1.5.0","2.0.0","2.0.0-rc1","2.0.0-rc1-update1","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.1.0","2.1.1","2.1.2","2.1.3","2.2.0","2.3.0","2.3.0-preview1","2.3.0-preview1-update1","2.3.0-preview1-update2","2.3.2","2.4.0","2.4.0-preview1","beta1-update1","beta2","beta2-update2","beta3","beta4","beta4-update1","beta4-update2","beta5","nuget_2.3.0-preview2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12250.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}