diff -up minidlna-1.3.3/minidlna.c.orig minidlna-1.3.3/minidlna.c
--- minidlna-1.3.3/minidlna.c.orig	2023-05-31 10:25:59.000000000 +0200
+++ minidlna-1.3.3/minidlna.c	2023-07-05 11:29:50.581828376 +0200
@@ -1069,6 +1069,10 @@ init(int argc, char **argv)
 		DPRINTF(E_FATAL, L_GENERAL, "Failed to switch to gid '%d'. [%s] EXITING.\n",
 			gid, strerror(errno));
 
+	if (setgroups(0, NULL) == -1)
+		DPRINTF(E_FATAL, L_GENERAL, "Failed to drop supplementary groups. [%s] EXITING.\n",
+			strerror(errno));
+
 	if (uid > 0 && setuid(uid) == -1)
 		DPRINTF(E_FATAL, L_GENERAL, "Failed to switch to uid '%d'. [%s] EXITING.\n",
 			uid, strerror(errno));