Item14544: Undefined variable if headers missing

foswiki · Dec 10, 2017 · b8511bb · b8511bb
1 parent 4ecda68
commit b8511bb
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/core/lib/Foswiki/Request.pm b/core/lib/Foswiki/Request.pm
@@ -298,7 +298,10 @@ sub url {
             $url = $Foswiki::cfg{DefaultUrlHost};
         }
         else {
-            my $vh = $this->header('X-Forwarded-Host') || $this->header('Host');
+            my $vh =
+                 $this->header('X-Forwarded-Host')
+              || $this->header('Host')
+              || '';
             $vh = ( split /[, ]+/, $vh )[0];
             $url =
                 $vh