{"id":"CVE-2020-2103","aliases":["BIT-jenkins-2020-2103","GHSA-4jjj-cm7q-v6hr"],"url":"https://o3.security/vulnerability/CVE-2020-2103","summary":"Jenkins Diagnostic page exposed session cookies","details":"Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a user's detail object in the whoAmI diagnostic page.","published":"2020-01-29T16:15:12.380Z","modified":"2026-07-08T20:30:58.012454Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.219"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.204.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2020/01/29/1"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHBA-2020:0402"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHBA-2020:0675"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2020:0681"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2020:0683"},{"type":"ADVISORY","url":"https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1695"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:30:58.012454Z"}}