diff --git a/PVE/API2/Ceph/OSD.pm b/PVE/API2/Ceph/OSD.pm
index 685b68bc..b81a8054 100644
--- a/PVE/API2/Ceph/OSD.pm
+++ b/PVE/API2/Ceph/OSD.pm
@@ -575,6 +575,8 @@ __PACKAGE__->register_method ({
 		    # try to remove pvs, but do not fail if it does not work
 		    for my $osd_part (@{$osd_list->{$osdid}}) {
 			for my $dev (@{$osd_part->{devices}}) {
+			    ($dev) = ($dev =~ m|^(/dev/[-_.a-zA-Z0-9\/]+)$|); #untaint
+
 			    eval { run_command(['/sbin/pvremove', $dev], errfunc => sub {}) };
 			    warn $@ if $@;
 			}