diff --git a/backend/implicitclass.c b/backend/implicitclass.c
index 1593191..3dad471 100644
--- a/backend/implicitclass.c
+++ b/backend/implicitclass.c
@@ -126,6 +126,14 @@ main(int  argc,				/* I - Number of command-line args */
       if ((response = cupsDoRequest(CUPS_HTTP_DEFAULT, request, "/")) ==
 	  NULL)
 	goto failed;
+
+      if (response && !ippValidateAttributes(response))
+      {
+        fprintf(stderr, "ERROR: The printer %s contains invalid attributes.", queue_name);
+        ippDelete(response);
+        return (CUPS_BACKEND_STOP);
+      }
+
       for (attr = ippFirstAttribute(response); attr != NULL;
 	   attr = ippNextAttribute(response)) {
 	while (attr != NULL && ippGetGroupTag(attr) != IPP_TAG_PRINTER)
diff --git a/utils/cups-browsed.c b/utils/cups-browsed.c
index 2b30c63..d65fecf 100644
--- a/utils/cups-browsed.c
+++ b/utils/cups-browsed.c
@@ -2639,6 +2639,13 @@ record_printer_options(const char *printer) {
 		 uri);
     response = cupsDoRequest(conn, request, resource);
 
+    if (response && !ippValidateAttributes(response))
+    {
+      fprintf(stderr, "The printer %s contains invalid attributes.", printer);
+      ippDelete(response);
+      return -1;
+    }
+
     /* Write all supported printer attributes */
     if (response) {
       attr = ippFirstAttribute(response);
@@ -3576,6 +3583,12 @@ create_remote_printer_entry (const char *queue_name,
 		  NULL, pattrs);
     response = cupsDoRequest(http_printer, request, resource);
 
+    if (response && !ippValidateAttributes(response))
+    {
+      fprintf(stderr, "The printer %s contains invalid attributes.", p->queue_name);
+      goto fail;
+    }
+
     /* Log all printer attributes for debugging */
     if (debug_stderr || debug_logfile) {
       debug_printf("Full list of IPP attributes (get-printer-attributes) for printer %s:\n",
diff --git a/utils/driverless.c b/utils/driverless.c
index fe61e58..0360bff 100644
--- a/utils/driverless.c
+++ b/utils/driverless.c
@@ -513,6 +513,12 @@ generate_ppd (const char *uri)
 		NULL, pattrs);
   response = cupsDoRequest(http, request, resource);
 
+  if (response && !ippValidateAttributes(response))
+  {
+    fprintf(stderr, "ERROR: The printer provides invalid attributes, skipping.");
+    goto fail;
+  }
+
   /* Log all printer attributes for debugging */
   if (debug) {
     attr = ippFirstAttribute(response);