Index: strongswan-5.2.1/src/libcharon/plugins/ext_auth/ext_auth_listener.c
===================================================================
--- strongswan-5.2.1.orig/src/libcharon/plugins/ext_auth/ext_auth_listener.c
+++ strongswan-5.2.1/src/libcharon/plugins/ext_auth/ext_auth_listener.c
@@ -101,6 +101,8 @@ METHOD(listener_t, authorize, bool,
 
 		*success = FALSE;
 
+		push_env(envp, countof(envp), "PATH=%s", getenv("PATH"));
+
 		push_env(envp, countof(envp), "IKE_UNIQUE_ID=%u",
 				 ike_sa->get_unique_id(ike_sa));
 		push_env(envp, countof(envp), "IKE_NAME=%s",