{"id":"CVE-2016-8609","aliases":["EUVD-2018-0559","GHSA-95m6-mjh3-58gm"],"status":"published","title":"Improper Authentication in org.keycloak:keycloak-core","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","severity":{"version":"3.0","score":3.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01679,"percentile":0.77075,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287","CWE-384"],"published":"2018-08-01T17:00:00Z","modified":"2026-10-24T10:30:28Z","fixes":[{"ecosystem":"Maven","package":"org.keycloak:keycloak-core","fixed_in":["2.3.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.keycloak:keycloak-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.keycloak:keycloak-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0"}]}],"versions":["1.0-alpha-1","1.0-alpha-1-12062013","1.0-alpha-2","1.0-alpha-3","1.0-alpha-4","1.0-beta-1","1.0-beta-1-20150521","1.0-beta-1-20150523","1.0-beta-2","1.0-beta-3","1.0-beta-4","1.0-final","1.0-rc-1","1.0-rc-2","1.0.1.Final","1.0.2.Final","1.0.3.Final","1.0.4.Final","1.0.5.Final","1.1.0.Beta1","1.1.0.Beta2","1.1.0.Final","1.1.1.Final","1.2.0.Beta1","1.2.0.CR1","1.2.0.Final","1.3.0.Final","1.3.1.Final","1.4.0.Final","1.5.0-Final","1.5.0.Final","1.5.1.Final","1.6.0.Final","1.6.1.Final","1.7.0.CR1","1.7.0.Final","1.8.0.Alpha1","1.8.0.CR1","1.8.0.CR2","1.8.0.CR3","1.8.0.Final","1.8.1.Final","1.9.0.CR1","1.9.0.Final","1.9.1.Final","1.9.2.Final","1.9.3.Final","1.9.4.Final","1.9.5.Final","1.9.7.Final","1.9.8.Final","2.0.0.CR1","2.0.0.Final","2.1.0.CR1","2.1.0.Final","2.2.0.CR1","2.2.0.Final","2.2.1.Final","2.3.0.CR1"]}],"products":[{"vendor":"keycloak","product":"keycloak"},{"vendor":"red hat","product":"keycloak"},{"vendor":"redhat","product":"keycloak"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8609","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"http://rhn.redhat.com/errata/RHSA-2016-2945.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.securitytracker.com/id/1037460","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://www.securityfocus.com/bid/95070","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-8609","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-95m6-mjh3-58gm","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2016-8609","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","status":"published","published":"2018-08-01T17:00:00Z","modified":"2024-08-06T02:27:41.009Z","cvss":[{"version":"3.0","score":3.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:33:32.415289Z"}],"euvd":[{"id":"EUVD-2018-0559","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","status":"published","published":"2018-08-01T17:00:00Z","modified":"2024-08-06T02:27:41Z","cvss":[{"version":"3.0","score":3.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T02:22:29.639634Z"}],"ghsa":[{"id":"GHSA-95m6-mjh3-58gm","title":"Improper Authentication in org.keycloak:keycloak-core","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","status":"published","published":"2018-10-18T16:48:41Z","modified":"2023-01-11T05:04:10Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-287","CWE-384"],"updated_at":"2026-11-02T14:36:12.361159Z"}],"nvd":[{"id":"CVE-2016-8609","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","status":"published","published":"2018-08-01T17:29:00.253Z","modified":"2026-06-17T00:54:35.777Z","cvss":[{"version":"3.0","score":3.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-384","CWE-287"],"updated_at":"2026-11-02T14:03:39.621168Z"}],"osv":[{"id":"CVE-2016-8609","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","status":"published","published":"2018-08-01T17:29:00.253Z","modified":"2026-10-24T10:30:28.011411322Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:03.171316Z"},{"id":"GHSA-95m6-mjh3-58gm","title":"Improper Authentication in org.keycloak:keycloak-core","description":"It was found that the keycloak before 2.3.0 did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks.","status":"published","published":"2018-10-18T16:48:41Z","modified":"2023-11-08T03:58:36.220777Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-287","CWE-384"],"updated_at":"2026-11-02T15:46:43.123867Z"}]}}