From 8e23ba8b17675a54477c8c812e7533afd41159ab Mon Sep 17 00:00:00 2001
From: noctuum <25441068+noctuum@users.noreply.github.com>
Date: Sun, 27 Sep 2026 23:50:55 +0500
Subject: [PATCH] Reject an empty argument list in execute_lua

`lua.execute` with no arguments dereferenced `args.begin()`.
---
 src/rpc/lua.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/rpc/lua.cc b/src/rpc/lua.cc
index c1f5c703..28e98ef0 100644
--- a/src/rpc/lua.cc
+++ b/src/rpc/lua.cc
@@ -394,6 +394,10 @@ execute_lua(LuaEngine* engine, rpc::target_type target_type, torrent::Object con
   switch (raw_args.type()) {
   case torrent::Object::TYPE_LIST: {
     const torrent::Object::list_type& args = raw_args.as_list();
+
+    if (args.empty())
+      throw torrent::input_error("Too few arguments.");
+
     if (flags & LuaEngine::flag_string) {
       check_lua_status(l_state, luaL_loadstring(l_state, args.begin()->as_string().c_str()));
     } else {