{"id":"CVE-2018-1999045","aliases":["GHSA-q4cq-r7hg-pxqq"],"url":"https://o3.security/vulnerability/CVE-2018-1999045","summary":"Improper Authentication in Jenkins","details":"A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.","published":"2018-08-23T18:29:00.843Z","modified":"2026-07-08T20:04:22.871418Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.121.3"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.138"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://jenkins.io/security/advisory/2018-08-15/#SECURITY-996"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:04:22.871418Z"}}