Jenkins Matrix Project Plugin 822.v01b_8c85d16d2 and earlier does not sanitize user-defined axis names of multi-configuration projects submitted through the config.xml
REST API endpoint.
This allows attackers with Item/Configure permission to create or replace any config.xml
file on the Jenkins controller file system with content not controllable by the attackers.
Matrix Project Plugin 822.824.v14451b_c0fd42 sanitizes user-defined axis names of Multi-configuration project.