diff --git a/packages/react-native/React/CoreModules/RCTWebSocketModule.mm b/packages/react-native/React/CoreModules/RCTWebSocketModule.mm
index e29d76a76a23..e82bde27dfd7 100644
--- a/packages/react-native/React/CoreModules/RCTWebSocketModule.mm
+++ b/packages/react-native/React/CoreModules/RCTWebSocketModule.mm
@@ -10,6 +10,7 @@
 #import <objc/runtime.h>
 
 #import <FBReactNativeSpec/FBReactNativeSpec.h>
+#import <React/RCTAssert.h>
 #import <React/RCTConvert.h>
 #import <React/RCTUtils.h>
 #import <SocketRocket/SRWebSocket.h>
@@ -66,6 +67,14 @@ - (void)invalidate
     connect : (NSURL *)URL protocols : (NSArray *)protocols options : (JS::NativeWebSocketModule::SpecConnectOptions &)
         options socketID : (double)socketID)
 {
+  if ((URL == nil) || URL.absoluteString.length == 0u) {
+    RCTAssert(NO, @"RCTWebSocketModule: Invalid WebSocket URL passed to connect");
+    NSNumber *socketIDNumber = @(socketID);
+    NSDictionary *body = @{@"message" : @"Invalid WebSocket URL", @"id" : socketIDNumber};
+    [self sendEventWithName:@"websocketFailed" body:body];
+    return;
+  }
+
   NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
 
   // We load cookies from sharedHTTPCookieStorage (shared with XHR and
@@ -77,14 +86,48 @@ - (void)invalidate
   }
 
   // Load and set the cookie header.
-  NSArray<NSHTTPCookie *> *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:components.URL];
-  request.allHTTPHeaderFields = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies];
+  if (components != nil && components.URL != nil) {
+    NSArray<NSHTTPCookie *> *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:components.URL];
+    request.allHTTPHeaderFields = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies];
+  } else {
+    RCTLogError(@"RCTWebSocketModule: Invalid URL components - components or components.URL is nil");
+  }
 
   // Load supplied headers
   if ([options.headers() isKindOfClass:NSDictionary.class]) {
     NSDictionary *headers = (NSDictionary *)options.headers();
-    [headers enumerateKeysAndObjectsUsingBlock:^(NSString *key, id value, BOOL *stop) {
-      [request addValue:[RCTConvert NSString:value] forHTTPHeaderField:key];
+    [headers enumerateKeysAndObjectsUsingBlock:^(id key, id value, BOOL *stop) {
+      BOOL validKey = [key isKindOfClass:[NSString class]];
+      BOOL validValue = [value isKindOfClass:[NSString class]];
+
+      if (!validKey && !validValue) {
+        RCTLogError(
+            @"RCTWebSocketModule: Invalid header key and value types. "
+             "Expected NSString for both, got key of type %@ and value of type %@.",
+            NSStringFromClass([key class]),
+            NSStringFromClass([value class]));
+        return;
+      }
+
+      if (!validKey) {
+        RCTLogError(
+            @"RCTWebSocketModule: Invalid header key type for value '%@'. "
+             "Expected NSString, got %@.",
+            value,
+            NSStringFromClass([key class]));
+        return;
+      }
+
+      if (!validValue) {
+        RCTLogError(
+            @"RCTWebSocketModule: Invalid header value type for key '%@'. "
+             "Expected NSString, got %@.",
+            key,
+            NSStringFromClass([value class]));
+      }
+
+      NSString *headerValue = validValue ? [RCTConvert NSString:value] : @"";
+      [request addValue:headerValue forHTTPHeaderField:key];
     }];
   }