ROOT xrootd version 4.6.0 and below is vulnerable to an unauthenticated shell command injection resulting in remote code execution
https://security.gentoo.org/glsa/201903-11
https://github.com/xrootd/xrootd/commit/befa2e627a5a33a38c92db3e57c07d8246a24acf
https://github.com/xrootd/xrootd/blob/v4.6.1/docs/ReleaseNotes.txt