Firejail uses weak permissions for /dev/shm/firejail and possibly other files, which allows local users to gain privileges.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "0.9.38-1", "binary_name": "firejail" }, { "binary_version": "0.9.38-1", "binary_name": "firejail-dbgsym" } ] }