{"id":"CVE-2021-21683","aliases":["BIT-jenkins-2021-21683","GHSA-4pw5-r58h-fv24"],"url":"https://o3.security/vulnerability/CVE-2021-21683","summary":"Path traversal vulnerability on Windows in Jenkins","details":"The file browser for workspaces, archived artifacts, and `userContent/` in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows.\n\nThis results in a path traversal vulnerability allowing attackers with Overall/Read permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of arbitrary files.\\n\\nThe file browser in Jenkins 2.315, LTS 2.303.2 refuses to serve files that would be considered absolute paths.","published":"2021-10-06T23:15:06.927Z","modified":"2026-07-09T00:12:31.187506Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/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":"2.303.2"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.315"}],"fix":{"url":"https://github.com/jenkinsci/jenkins/commit/3f679fc12d073676a4441d3fa8b5fff34c07662f","label":"jenkinsci/jenkins@3f679fc"},"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-2481"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21683"},{"type":"WEB","url":"https://github.com/jenkinsci/jenkins/commit/3f679fc12d073676a4441d3fa8b5fff34c07662f"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/jenkins"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:12:31.187506Z"}}