From 52ebac833fbefd8137e1a2c5deba2598cc3b427a Mon Sep 17 00:00:00 2001
From: robert <ubuntu@ubuntu-2204.linuxvmimages.local>
Date: Thu, 12 Nov 2026 17:46:04 +0200
Subject: [PATCH] Validate RPC buffer

---
 mongoose.c | 2 +-
 src/rpc.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mongoose.c b/mongoose.c
index ee05708a..9c98cbd5 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -15353,7 +15353,7 @@ void mg_rpc_process(struct mg_rpc_req *r) {
     mg_rpc_call(r, mg_str(""));  // JSON response! call "" method handler
   } else {
     mg_rpc_err(r, -32700, "%m", mg_print_esc, (int) r->frame.len,
-               r->frame.buf);  // Invalid
+               r->frame.len ? r->frame.buf : "");  // Invalid
   }
 }
 
diff --git a/src/rpc.c b/src/rpc.c
index 84b6c178..0e01a874 100644
--- a/src/rpc.c
+++ b/src/rpc.c
@@ -47,7 +47,7 @@ void mg_rpc_process(struct mg_rpc_req *r) {
     mg_rpc_call(r, mg_str(""));  // JSON response! call "" method handler
   } else {
     mg_rpc_err(r, -32700, "%m", mg_print_esc, (int) r->frame.len,
-               r->frame.buf);  // Invalid
+               r->frame.len ? r->frame.buf : "");  // Invalid
   }
 }