Description
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.
Remediation
References
https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2153
Related Vulnerabilities
CVE-2019-20903 Vulnerability in npm package @atlaskit/editor-core
CVE-2021-20328 Vulnerability in maven package org.mongodb:mongodb-driver-sync
CVE-2023-29508 Vulnerability in maven package org.xwiki.platform:xwiki-platform-livedata-macro
CVE-2021-22132 Vulnerability in maven package org.elasticsearch:elasticsearch
CVE-2020-2230 Vulnerability in maven package org.jenkins-ci.main:jenkins-core