From a6f949c8a659d9f4c5b347981e29699fdad7c9e4 Mon Sep 17 00:00:00 2001
From: Tim Angus <tim@ngus.net>
Date: Mon, 6 Oct 2025 18:27:00 +0100
Subject: [PATCH] Stricter Info_Validate

---
 code/qcommon/q_shared.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/code/qcommon/q_shared.c b/code/qcommon/q_shared.c
index e75fa2f0..37f2ec05 100644
--- a/code/qcommon/q_shared.c
+++ b/code/qcommon/q_shared.c
@@ -1301,12 +1301,22 @@ can mess up the server's parsing
 ==================
 */
 qboolean Info_Validate( const char *s ) {
-	if ( strchr( s, '\"' ) ) {
-		return qfalse;
-	}
-	if ( strchr( s, ';' ) ) {
-		return qfalse;
+	const char* ch = s;
+
+	while ( *ch != '\0' )
+	{
+		if( !Q_isprint( *ch ) )
+			return qfalse;
+
+		if( *ch == '\"' )
+			return qfalse;
+
+		if( *ch == ';' )
+			return qfalse;
+
+		++ch;
 	}
+
 	return qtrue;
 }