Firejail before 0.9.44.4, when running a bandwidth command, allows local users to gain root privileges via the --shell argument.
https://security.gentoo.org/glsa/201701-62
https://github.com/netblue30/firejail/issues/1023
https://github.com/netblue30/firejail/commit/5d43fdcd215203868d440ffc42036f5f5ffc89fc
https://firejail.wordpress.com/download-2/release-notes/