{"id":"BIT-jenkins-2021-21610","details":"Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not implement any restrictions for the URL rendering a formatted preview of markup passed as a query parameter, resulting in a reflected cross-site scripting (XSS) vulnerability if the configured markup formatter does not prohibit unsafe elements (JavaScript) in markup.","aliases":["CVE-2021-21610","GHSA-7qf3-c2q8-69m3"],"modified":"2026-09-08T08:47:38.486369269Z","published":"2024-03-06T11:02:44.288Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*","cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2153"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21610"}],"affected":[{"package":{"name":"jenkins","ecosystem":"Bitnami","purl":"pkg:bitnami/jenkins"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.274.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/jenkins/BIT-jenkins-2021-21610.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}],"schema_version":"1.9.0"}