{"id":"CVE-2020-2301","aliases":["GHSA-954f-xw44-56r2"],"url":"https://o3.security/vulnerability/CVE-2020-2301","summary":"Authentication cache in Active Directory Jenkins Plugin allows logging in with any password","details":"Jenkins Active Directory Plugin implements two separate modes: Integration with ADSI on Windows, and an OS agnostic LDAP-based mode. Optionally, to reduce lookup time, a cache can be configured to remember user lookups and user authentications.\n\nIn Active Directory Plugin prior to 2.20 and 2.16.1, when run in Windows/ADSI mode, the provided password was not used when looking up an applicable cache entry. This allows attackers to log in as any user using any password while a successful authentication of that user is still in the cache.\n\nAs a workaround for this issue, the cache can be disabled.\n\nActive Directory Plugin 2.20 and 2.16.1 includes the provided password in cache entry lookup.\n\nAdditionally, the Java system property `hudson.plugins.active_directory.CacheUtil.noCacheAuth` can be set to `true` to no longer cache user authentications.","published":"2020-11-04T15:15:11.193Z","modified":"2026-10-24T10:30:42.595704142Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:active-directory","fixedVersion":"2.20"},{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:active-directory","fixedVersion":"2.16.1"}],"fix":{"url":"https://github.com/jenkinsci/active-directory-plugin/commit/57e78ea7bb96b4e59405f28959ade2d26821163d","label":"jenkinsci/active-directory-plugin@57e78ea"},"references":[{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2123"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2301"},{"type":"WEB","url":"https://github.com/jenkinsci/active-directory-plugin/commit/57e78ea7bb96b4e59405f28959ade2d26821163d"},{"type":"WEB","url":"https://github.com/CVEProject/cvelist/blob/381fe967666a5ce01625a7a050427aa4757e3ca6/2020/2xxx/CVE-2020-2301.json"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/active-directory-plugin"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:42.595704142Z"}}