{"id":"CVE-2018-8899","details":"IdentityServer IdentityServer4 1.x before 1.5.3 and 2.x before 2.1.3 does not encode the redirect URI on the authorization response page, which might lead to XSS in some configurations.","modified":"2026-04-10T04:12:35.217281Z","published":"2018-03-22T05:29:00.287Z","references":[{"type":"ADVISORY","url":"https://github.com/IdentityServer/IdentityServer4/releases/tag/1.5.3"},{"type":"ADVISORY","url":"https://github.com/IdentityServer/IdentityServer4/releases/tag/2.1.3"},{"type":"REPORT","url":"https://github.com/IdentityServer/IdentityServer4/issues/2164"},{"type":"FIX","url":"https://github.com/IdentityServer/IdentityServer4/commit/21d0da227f50ac102de469a13bc5a15d2cc0f895"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/duendearchive/identityserver4","events":[{"introduced":"0"},{"fixed":"21d0da227f50ac102de469a13bc5a15d2cc0f895"},{"fixed":"02e7b1db08ea20483fa84f0087612f9d7c57d7e7"},{"fixed":"35ac1ac2d8f62cc3c6b2602bb653c3e651cdcfd8"}]},{"type":"GIT","repo":"https://github.com/identityserver/identityserver4","events":[{"introduced":"62eea365e8835323230c32eff6ec9b7b78cc1be0"},{"last_affected":"b9f179103be2d8708131394527cebc1e9f6b17aa"},{"introduced":"1b88084c06eb6a0368ccec9fed7c9a295f1d508b"},{"last_affected":"becb2206826b1039687b3ec895fad5e1b26ef0c5"}],"database_specific":{"versions":[{"introduced":"1.0.0"},{"last_affected":"1.5.2"},{"introduced":"2.0.0"},{"last_affected":"2.1.2"}]}}],"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","beta1-update1","beta2","beta2-update2","beta3","beta4","beta4-update1","beta4-update2","beta5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8899.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"}]}