diff --git a/Libraries/Text/TextInput/RCTBaseTextInputView.m b/Libraries/Text/TextInput/RCTBaseTextInputView.m
index c719b56289171e..8b0c4c192fa921 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputView.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputView.m
@@ -439,7 +439,8 @@ - (NSString *)textInputShouldChangeText:(NSString *)text inRange:(NSRange)range
 
   if (_onTextInput) {
     _onTextInput(@{
-      @"text": text,
+      // We copy the string here because if it's a mutable string it may get released before we stop using it on a different thread, causing a crash.
+      @"text": [text copy],
       @"previousText": previousText,
       @"range": @{
         @"start": @(range.location),
diff --git a/React/CoreModules/RCTEventDispatcher.mm b/React/CoreModules/RCTEventDispatcher.mm
index f2cf17c947eedf..3669e2e7d64b58 100644
--- a/React/CoreModules/RCTEventDispatcher.mm
+++ b/React/CoreModules/RCTEventDispatcher.mm
@@ -86,7 +86,9 @@ - (void)sendTextEventWithType:(RCTTextEventType)type
   }];
 
   if (text) {
-    body[@"text"] = text;
+    // We copy the string here because if it's a mutable string it may get released before we dispatch the event on a
+    // different thread, causing a crash.
+    body[@"text"] = [text copy];
   }
 
   if (key) {
@@ -103,7 +105,9 @@ - (void)sendTextEventWithType:(RCTTextEventType)type
           break;
       }
     }
-    body[@"key"] = key;
+    // We copy the string here because if it's a mutable string it may get released before we dispatch the event on a
+    // different thread, causing a crash.
+    body[@"key"] = [key copy];
   }
 
   RCTComponentEvent *event = [[RCTComponentEvent alloc] initWithName:events[type] viewTag:reactTag body:body];