Without @columns (look at allow_loose_quotes, escape_char and especially at sep_char)

use Text::CSV_XS;

use strict;
use warnings;

my $csvfile = shift or die "No filename specified";

my $csv = Text::CSV_XS->new( { quote_char => '"',
                                      sep_char => ",",
                                      binary => 1,
                                      allow_loose_quotes => 1,
                                      escape_char => '\\'} );

my @columns;

open(FILE, $csvfile) or die "Can't open $csvfile: $!";
my %hash;
while (<FILE>) {

        $csv->parse($_) or die "parse() failed: " . $csv->error_input(
+);
        my @data = $csv->fields();

        foreach my $pair (@data) {
            
            my ( $key, $value ) = split /:/, $pair;
            $hash{$key} = $value;
        }
}
close(FILE);

use Data::Dumper;
print Dumper(\%hash);
[download]