This file is indexed.

/etc/firejail/Xephyr.profile is in firejail-profiles 0.9.52-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# Firejail profile for Xephyr
# This file is overwritten after every install/update
# Persistent local customizations
include /etc/firejail/Xephyr.local
# Persistent global definitions
include /etc/firejail/globals.local

#
# This profile will sandbox Xephyr server itself when used with firejail --x11=xephyr.
# To enable it, create a firejail-Xephyr  symlink in /usr/local/bin:
#
#    $ sudo ln -s /usr/bin/firejail /usr/local/bin/Xephyr
#
# or run "sudo firecfg"
#


blacklist /media

whitelist /var/lib/xkb
include /etc/firejail/whitelist-common.inc

caps.drop all
# Xephyr needs to be allowed access to the abstract Unix socket namespace.
nodvd
nogroups
nonewprivs
# In noroot mode, Xephyr cannot create a socket in the real /tmp/.X11-unix.
# noroot
nosound
notv
protocol unix
seccomp
shell none

# using a private home directory
private
# private-bin Xephyr,sh,xkbcomp
# private-bin Xephyr,sh,xkbcomp,strace,bash,cat,ls
private-dev
# private-etc ld.so.conf,ld.so.cache,resolv.conf,host.conf,nsswitch.conf,gai.conf,hosts,hostname
private-tmp