{"id":"CVE-2020-2253","details":"Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.","aliases":["GHSA-4qrj-99r6-jfrh"],"modified":"2026-07-09T00:06:33.283340Z","published":"2020-09-16T14:15:13.097Z","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-1851"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jenkinsci/email-ext-plugin","events":[{"introduced":"0"},{"last_affected":"e67bc27de22908b673c3367e658ec64bea7da718"}],"database_specific":{"cpe":"cpe:2.3:a:jenkins:email_extension:*:*:*:*:*:jenkins:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"2.75"}],"source":"CPE_RANGE"}}],"versions":["email-ext-2.75","email-ext-2.74","email-ext-2.73","email-ext-2.72","email-ext-2.71","email-ext-2.69","email-ext-2.68","email-ext-2.67","email-ext-2.66","email-ext-2.65","email-ext-2.64","email-ext-2.63","email-ext-2.62","email-ext-2.61","email-ext-2.60","email-ext-2.59","email-ext-2.58","email-ext-2.57","email-ext-2.56","email-ext-2.55","email-ext-2.52","email-ext-2.51","email-ext-2.50","email-ext-2.49","email-ext-2.48","email-ext-2.47","email-ext-2.46","email-ext-2.45","email-ext-2.44","email-ext-2.43","email-ext-2.42","email-ext-2.41.2","email-ext-2.41","email-ext-2.40.2","email-ext-2.40","email-ext-2.39","email-ext-2.37.2","email-ext-2.37.1","email-ext-2.37","email-ext-2.35.1","email-ext-2.35","email-ext-2.34","email-ext-2.33","email-ext-2.32","email-ext-2.31","email-ext-2.30.2","email-ext-2.30.1","email-ext-2.30","email-ext-2.29","email-ext-2.27.1","email-ext-2.27","email-ext-2.25","email-ext-2.24.1","email-ext-2.24","email-ext-2.22","email-ext-2.21","email-ext-2.20","email-ext-2.19","email-ext-2.18","email-ext-2.17","email-ext-2.16","email-ext-2.15","email-ext-2.14","email-ext-2.13","email-ext-2.12","email-ext-2.11"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-2253.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}