From 7db6b82a1a876a91cd0d95fbfb795e6c2b033d7f Mon Sep 17 00:00:00 2001
From: Shaun Walker <shaun.walker@siliqon.com>
Date: Wed, 15 Feb 2023 15:21:50 -0500
Subject: [PATCH] add defensive logic to querystring parser to handle duplicate
 parameters

---
 Oqtane.Client/UI/SiteRouter.razor | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Oqtane.Client/UI/SiteRouter.razor b/Oqtane.Client/UI/SiteRouter.razor
index 1c1998ad..5545758b 100644
--- a/Oqtane.Client/UI/SiteRouter.razor
+++ b/Oqtane.Client/UI/SiteRouter.razor
@@ -306,11 +306,17 @@
 					if (kvp.Contains("="))
 					{
 						string[] pair = kvp.Split('=');
-						querystring.Add(pair[0], pair[1]);
+						if (!querystring.ContainsKey(pair[0]))
+						{
+							querystring.Add(pair[0], pair[1]);
+						}
 					}
 					else
 					{
-						querystring.Add(kvp, "true"); // default parameter when no value is provided
+						if (!querystring.ContainsKey(kvp))
+						{
+							querystring.Add(kvp, "true"); // default parameter when no value is provided
+						}
 					}
 				}
 			}