{"id":"CVE-2018-1000408","aliases":["GHSA-4h47-h3cr-23wh"],"url":"https://o3.security/vulnerability/CVE-2018-1000408","summary":"Improper Authorization in Jenkins","details":"A denial of service vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that allows attackers without Overall/Read permission to access a specific URL on instances using the built-in Jenkins user database security realm that results in the creation of an ephemeral user record in memory.","published":"2019-01-09T23:29:02.340Z","modified":"2026-10-24T10:30:53.912715288Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"},"epss":{"score":0.01566,"percentile":0.72992,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.138.2"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.146"}],"fix":{"url":"https://github.com/jenkinsci/jenkins/commit/01157a699f611ca7492e872103ac01526a982cf2","label":"jenkinsci/jenkins@01157a6"},"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/106532"},{"type":"ADVISORY","url":"https://jenkins.io/security/advisory/2018-10-10/#SECURITY-1128"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000408"},{"type":"WEB","url":"https://github.com/jenkinsci/jenkins/commit/01157a699f611ca7492e872103ac01526a982cf2"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/jenkins"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:53.912715288Z"}}