diff --git a/pkgs/development/libraries/wavpack/default.nix b/pkgs/development/libraries/wavpack/default.nix
index 7163e2a87d7..aa45b72d4dd 100644
--- a/pkgs/development/libraries/wavpack/default.nix
+++ b/pkgs/development/libraries/wavpack/default.nix
@@ -49,6 +49,11 @@ stdenv.mkDerivation rec {
       name = "CVE-2019-11498-4.patch";
       sha256 = "0qdw071b14hmxkjw6kn83d8hzq89l3hqh64pl1f1wb8m51w5xfg7";
     })
+    (fetchpatch {
+      url = "https://github.com/dbry/WavPack/commit/070ef6f138956d9ea9612e69586152339dbefe51.patch";
+      name = "CVE-2018-19840.patch";
+      sha256 = "08y27py8hnki74ad8wbknnd36vj5pzzcm2vk3ngcbsjnj7x5mffz";
+    })
   ];
 
   meta = with stdenv.lib; {