{"id":"CVE-2021-21682","aliases":["BIT-jenkins-2021-21682","GHSA-6q4g-84f3-mw74"],"url":"https://o3.security/vulnerability/CVE-2021-21682","summary":"Improper handling of equivalent directory names on Windows in Jenkins","details":"Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.","published":"2021-10-06T23:15:06.860Z","modified":"2026-07-09T00:22:36.187625Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.315"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.303.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/10/06/1"},{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:22:36.187625Z"}}