CVE-2021-21610
MEDIUM6.1EPSS 0.33%Reflected XSS vulnerability in Jenkins markup formatter preview
Published: 5/24/2022Modified: 4/3/2025
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.
Affected packages (2)
- Bitnami/jenkinsfrom 0, < 2.274.1
- Maven/org.jenkins-ci.main:jenkins-corefrom 0, < 2.263.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |