{"id":"CVE-2022-34174","aliases":["BIT-jenkins-2022-34174","GHSA-9grj-j43m-mjqr"],"url":"https://o3.security/vulnerability/CVE-2022-34174","summary":"Observable timing discrepancy allows determining username validity in Jenkins","details":"In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm. This allows attackers to determine the validity of attacker-specified usernames.\n\nLogin attempts with an invalid username now validate a synthetic password to eliminate the timing discrepancy in Jenkins 2.356, LTS 2.332.4.","published":"2022-06-23T17:15:15.507Z","modified":"2026-07-09T06:35:31.783460Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.356"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.332.4"}],"fix":{"url":"https://github.com/jenkinsci/jenkins/commit/957ef5902f2e40b6358e6d10f12b26f9dbd2f75a","label":"jenkinsci/jenkins@957ef59"},"references":[{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2022-06-22/#SECURITY-2566"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-34174"},{"type":"WEB","url":"https://github.com/jenkinsci/jenkins/commit/957ef5902f2e40b6358e6d10f12b26f9dbd2f75a"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/jenkins"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T06:35:31.783460Z"}}