lib/Image/ExifTool.pm in ExifTool before 12.38 mishandles a $file =~ /\|$/ check, leading to command injection.
To install Image::ExifTool, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Image::ExifTool
CPAN shell
perl -MCPAN -e shell install Image::ExifTool
For more information on module installation, please visit the detailed CPAN module installation guide.