{"id":"CVE-2017-12161","aliases":["EUVD-2018-0558","GHSA-959q-32g8-vvp7"],"status":"published","title":"Moderate severity vulnerability that affects org.keycloak:keycloak-core","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01308,"percentile":0.70791,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-602","CWE-640"],"published":"2018-02-21T18:00:00Z","modified":"2026-10-20T10:47:42Z","fixes":[{"ecosystem":"Maven","package":"org.keycloak:keycloak-core","fixed_in":["3.4.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.keycloak:keycloak-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.keycloak:keycloak-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2"}]}],"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","2.3.0.Final","2.4.0.CR1","2.4.0.Final","2.5.0.CR1","2.5.0.Final","2.5.1.Final","2.5.4.Final","2.5.5.Final","3.0.0.CR1","3.0.0.Final","3.1.0.CR1","3.1.0.Final","3.2.0.CR1","3.2.0.Final","3.2.1.Final","3.3.0.CR1","3.3.0.CR2","3.3.0.Final","3.4.0.CR1","3.4.0.Final","3.4.1.CR1","3.4.1.Final"]}],"products":[{"vendor":"keycloak","product":"keycloak"},{"vendor":"red hat, inc.","product":"keycloak"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1484564","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://github.com/keycloak/keycloak-documentation/pull/268/commits/a2b58aadee42af2c375b72e86dffc2cf23cc3770","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-12161","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-959q-32g8-vvp7","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2017-12161","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","status":"published","published":"2018-02-21T18:00:00Z","modified":"2024-08-05T18:28:16.559Z","cwes":["CWE-602"],"updated_at":"2026-11-02T14:33:17.264801Z"}],"euvd":[{"id":"EUVD-2018-0558","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","status":"published","published":"2018-02-21T18:00:00Z","modified":"2024-08-05T18:28:16Z","updated_at":"2026-11-03T02:23:22.23661Z"}],"ghsa":[{"id":"GHSA-959q-32g8-vvp7","title":"Moderate severity vulnerability that affects org.keycloak:keycloak-core","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","status":"published","published":"2018-10-18T16:50:05Z","modified":"2023-01-09T05:03:02Z","cwes":["CWE-602"],"updated_at":"2026-11-02T14:36:04.396827Z"}],"nvd":[{"id":"CVE-2017-12161","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","status":"published","published":"2018-02-21T18:29:00.213Z","modified":"2026-06-17T01:02:47.973Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-602","CWE-640"],"updated_at":"2026-11-02T14:04:15.877386Z"}],"osv":[{"id":"CVE-2017-12161","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","status":"published","published":"2018-02-21T18:29:00.213Z","modified":"2026-10-20T10:47:42.782508366Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:04.159616Z"},{"id":"GHSA-959q-32g8-vvp7","title":"Moderate severity vulnerability that affects org.keycloak:keycloak-core","description":"It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.","status":"published","published":"2018-10-18T16:50:05Z","modified":"2024-12-02T05:38:19.096262Z","cwes":["CWE-602"],"updated_at":"2026-11-02T15:46:43.123867Z"}]}}