{"id":"CVE-2017-2646","details":"It was found that when Keycloak before 2.5.5 receives a Logout request with a Extensions in the middle of the request, the SAMLSloRequestParser.parse() method ends in a infinite loop. An attacker could use this flaw to conduct denial of service attacks.","aliases":["GHSA-jc6q-27mw-p55w"],"modified":"2026-07-22T03:44:44.767582Z","published":"2018-07-27T18:29:01.017Z","references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/96882"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2646"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/keycloak/keycloak","events":[{"introduced":"0"},{"fixed":"e677755bc5e4efd83ab1a92158f647907ccc0095"}],"database_specific":{"cpe":"cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.5.5"}],"source":"CPE_RANGE"}}],"versions":["2.5.4.Final","2.5.3.Final","2.5.2.Final","2.5.1.Final","2.4.0.Test","1.3.0.Final","1.1.0.Beta2","1.0.0.Final","1.0-final","1.0-rc-1","1.0-beta-4","1.0-beta-2","1.0-beta-1","1.0-alpha-3","1.0-alpha-2","1.0-alpha-1","1.0-alpha-1-12062013"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-2646.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}