diff --git a/.env.example b/.env.example
index 5ca052422d..4ede4652bd 100644
--- a/.env.example
+++ b/.env.example
@@ -24,6 +24,10 @@ ENABLE_MEMORY_SYSTEM_CONTEXT=true
 # Set to true to add compact row/column stats to parsed CSV retrieval context.
 ENABLE_RAG_CSV_SUMMARY=false
 
+# Opt in to automatic sending of URL-provided prompts (including links from other sites).
+# Defaults to prefill only; enabling this requires a backend restart.
+ENABLE_URL_QUERY_SUBMISSION=false
+
 # Set to true to preserve backing file records, storage blobs, and per-file vectors when files are removed from knowledge bases.
 ENABLE_KNOWLEDGE_FILE_RETENTION=false
 
diff --git a/backend/open_webui/config.py b/backend/open_webui/config.py
index 7b4fb5a9a0..bfacfed5c6 100644
--- a/backend/open_webui/config.py
+++ b/backend/open_webui/config.py
@@ -1742,6 +1742,8 @@ RESPONSE_WATERMARK = os.getenv('RESPONSE_WATERMARK', '')
 
 IFRAME_CSP = os.getenv('IFRAME_CSP', '')
 
+ENABLE_URL_QUERY_SUBMISSION = os.getenv('ENABLE_URL_QUERY_SUBMISSION', 'False').lower() == 'true'
+
 USER_PERMISSIONS_WORKSPACE_MODELS_ACCESS = (
     os.getenv('USER_PERMISSIONS_WORKSPACE_MODELS_ACCESS', 'False').lower() == 'true'
 )
diff --git a/backend/open_webui/main.py b/backend/open_webui/main.py
index 0ed3d753ea..17f6077e69 100644
--- a/backend/open_webui/main.py
+++ b/backend/open_webui/main.py
@@ -53,6 +53,7 @@ from open_webui.config import (
     ENABLE_ADMIN_EXPORT,
     ENABLE_ONEDRIVE_BUSINESS,
     ENABLE_ONEDRIVE_PERSONAL,
+    ENABLE_URL_QUERY_SUBMISSION,
     # OpenAI
     ENV,
     FRONTEND_BUILD_DIR,
@@ -2393,6 +2394,7 @@ async def get_app_config(request: Request):
                     'enable_code_interpreter': config.get('code_interpreter.enable'),
                     'enable_image_generation': config.get('image_generation.enable'),
                     'enable_autocomplete_generation': config.get('task.autocomplete.enable'),
+                    'enable_url_query_submission': ENABLE_URL_QUERY_SUBMISSION,
                     'enable_community_sharing': config.get('ui.enable_community_sharing'),
                     'enable_message_rating': config.get('ui.enable_message_rating'),
                     'enable_user_webhooks': config.get('ui.enable_user_webhooks'),
diff --git a/src/lib/components/chat/Chat.svelte b/src/lib/components/chat/Chat.svelte
index e69924f807..0f0464be8d 100644
--- a/src/lib/components/chat/Chat.svelte
+++ b/src/lib/components/chat/Chat.svelte
@@ -2622,7 +2622,10 @@
 		} else if ($page.url.searchParams.get('q')) {
 			const q = $page.url.searchParams.get('q') ?? '';
 
-			if (($page.url.searchParams.get('submit') ?? 'true') === 'true') {
+			if (
+				$config?.features?.enable_url_query_submission &&
+				($page.url.searchParams.get('submit') ?? 'true') === 'true'
+			) {
 				messageInput?.setText(q, () => submitHandler(prompt));
 			} else {
 				messageInput?.setText(q);
diff --git a/src/lib/stores/index.ts b/src/lib/stores/index.ts
index e78e11bcef..4742b2c116 100644
--- a/src/lib/stores/index.ts
+++ b/src/lib/stores/index.ts
@@ -382,6 +382,7 @@ type Config = {
 		enable_functions?: boolean;
 		enable_tool_servers?: boolean;
 		enable_autocomplete_generation: boolean;
+		enable_url_query_submission?: boolean;
 		enable_direct_connections: boolean;
 		enable_direct_integrations?: boolean;
 		enable_version_update_check: boolean;
diff --git a/src/routes/(app)/+layout.svelte b/src/routes/(app)/+layout.svelte
index dd50e9a173..c889671499 100644
--- a/src/routes/(app)/+layout.svelte
+++ b/src/routes/(app)/+layout.svelte
@@ -284,6 +284,7 @@
 			terminalServers.set([]);
 		});
 		if (
+			$config?.features?.enable_url_query_submission &&
 			$page.url.searchParams.get('q') &&
 			($page.url.searchParams.get('submit') ?? 'true') === 'true'
 		) {