Jenkins Matrix Project Plugin 822.v01b_8c85d16d2 and earlier does not sanitize user-defined axis names of multi-configuration projects, allowing attackers with Item/Configure permission to create or replace any config.xml files on the Jenkins controller file system with content not controllable by the attackers.
Jenkins Matrix Project Plugin 1.19 and earlier does not escape HTML metacharacters in node and label names, and label descriptions, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure permission.