CVE-2021-21663: Jenkins Xebialabs Xl Deploy

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

A missing permission check in Jenkins XebiaLabs XL Deploy Plugin 7.5.8 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins.

Affected products

• Jenkins Xebialabs Xl Deploy: up to and including 7.5.8

Published 2021-06-10. Last modified 2026-06-17.