{"id":"CVE-2020-2252","aliases":["GHSA-6fr3-286q-q3cr"],"url":"https://o3.security/vulnerability/CVE-2020-2252","summary":"Improper Validation of Certificate with Host Mismatch in Jenkins Mailer Plugin","details":"Jenkins Mailer Plugin 1.32 and earlier does not perform hostname validation when connecting to the configured SMTP server.","published":"2020-09-16T14:15:13Z","modified":"2026-07-08T16:27:52.883184Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:mailer","fixedVersion":"1.32.1"},{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:mailer","fixedVersion":"1.31.1"},{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:mailer","fixedVersion":"1.29.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2020/09/16/3"},{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1813"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T16:27:52.883184Z"}}