diff --git a/MVMCoreUI/OtherHandlers/MVMCoreUIActionHandler.m b/MVMCoreUI/OtherHandlers/MVMCoreUIActionHandler.m
index ad19f862..80a932de 100644
--- a/MVMCoreUI/OtherHandlers/MVMCoreUIActionHandler.m
+++ b/MVMCoreUI/OtherHandlers/MVMCoreUIActionHandler.m
@@ -35,6 +35,16 @@
     return NO;
 }
 
+- (void)openPageAction:(NSDictionary *)actionInformation additionalData:(NSDictionary *)additionalData delegateObject:(DelegateObject *)delegateObject {
+    // Cleanup the source model data to prevent it from being accidentally auto-forwarded in openPage network requests by blind additionalData insertions. (https://onejira.verizon.com/browse/CXTDT-135642, https://onejira.verizon.com/browse/CXTDT-136001).
+    if (additionalData[KeySourceModel]) {
+        NSMutableDictionary *cleanedData = [additionalData mutableCopy];
+        [cleanedData removeObjectForKey:KeySourceModel];
+        additionalData = cleanedData;
+    }
+    [super openPageAction:actionInformation additionalData:additionalData delegateObject:delegateObject];
+}
+
 - (void)popupAction:(nullable NSDictionary *)actionInformation additionalData:(nullable NSDictionary *)additionalData delegateObject:(nullable DelegateObject *)delegateObject {
     // Perform a popup.
     NSString *pageTypeForPopup = [actionInformation stringForKey:KeyPageType];