A NULL pointer dereference in the daap_reply_playlists function (src/httpd_daap.c) of owntone-server commit 3d1652d allows attackers to cause a Denial of Service (DoS) via sending a crafted DAAP request to the server
https://github.com/owntone/owntone-server/issues/1961
https://github.com/owntone/owntone-server/commit/9ac54f0b42491c4862791db4c5368ff80c4000d3