kiwix: mark as insecure

There is at least one recorded issue against our kiwix version. Upstream
does no longer support this version of the project. They have moved to a
different repository & software architecture.

pkgs/applications/misc/kiwix/default.nix

@@ -103,5 +103,8 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3;
     platforms = platforms.linux;
     maintainers = with maintainers; [ robbinch ];
+    knownVulnerabilities = [
+      "CVE-2015-1032"
+    ];
   };
 }