diff --git a/chrome/browser/ui/views/passwords/account_chooser_dialog_view.cc b/chrome/browser/ui/views/passwords/account_chooser_dialog_view.cc
index 9a1ac1799e51d..8830672cf3962 100644
--- a/chrome/browser/ui/views/passwords/account_chooser_dialog_view.cc
+++ b/chrome/browser/ui/views/passwords/account_chooser_dialog_view.cc
@@ -109,6 +109,11 @@ void AccountChooserDialogView::WindowClosing() {
   }
 }
 
+bool AccountChooserDialogView::ShouldAllowKeyEventsDuringInputProtection()
+    const {
+  return false;
+}
+
 bool AccountChooserDialogView::Accept() {
   DCHECK(controller_);
   controller_->OnSignInClicked();
diff --git a/chrome/browser/ui/views/passwords/account_chooser_dialog_view.h b/chrome/browser/ui/views/passwords/account_chooser_dialog_view.h
index bb8589b73117b..5abd784dfa904 100644
--- a/chrome/browser/ui/views/passwords/account_chooser_dialog_view.h
+++ b/chrome/browser/ui/views/passwords/account_chooser_dialog_view.h
@@ -35,6 +35,11 @@ class AccountChooserDialogView : public views::DialogDelegate,
 
   // DialogDelegate:
   bool Accept() override;
+  // The 'Sign in' button releases a (possibly cross-origin / PSL-matched)
+  // saved password to the page. Gate Enter/Space behind the input-event
+  // activation protector's minimum-show-time so a socially-engineered
+  // keypress that races dialog appearance is rejected.
+  bool ShouldAllowKeyEventsDuringInputProtection() const override;
 
  private:
   std::u16string GetWindowTitle() const override;
diff --git a/chrome/browser/ui/views/passwords/password_combined_selector_view.cc b/chrome/browser/ui/views/passwords/password_combined_selector_view.cc
index 6da03eddbee5f..6181727184da3 100644
--- a/chrome/browser/ui/views/passwords/password_combined_selector_view.cc
+++ b/chrome/browser/ui/views/passwords/password_combined_selector_view.cc
@@ -522,6 +522,11 @@ bool PasswordCombinedSelectorView::Accept() {
   return false;
 }
 
+bool PasswordCombinedSelectorView::ShouldAllowKeyEventsDuringInputProtection()
+    const {
+  return false;
+}
+
 void PasswordCombinedSelectorView::InitWindow() {
   auto main_view = std::make_unique<PasswordCombinedSelectorViewWrapper>();
   main_view->SetLayoutManager(std::make_unique<views::FillLayout>());
diff --git a/chrome/browser/ui/views/passwords/password_combined_selector_view.h b/chrome/browser/ui/views/passwords/password_combined_selector_view.h
index b8d360c89fc37..5e3bcdf865798 100644
--- a/chrome/browser/ui/views/passwords/password_combined_selector_view.h
+++ b/chrome/browser/ui/views/passwords/password_combined_selector_view.h
@@ -49,6 +49,11 @@ class PasswordCombinedSelectorView
 
   // views::DialogDelegate:
   bool Accept() override;
+  // The 'Sign in' button releases a (possibly cross-origin / PSL-matched)
+  // saved password to the page. Gate Enter/Space behind the input-event
+  // activation protector's minimum-show-time so a socially-engineered
+  // keypress that races dialog appearance is rejected.
+  bool ShouldAllowKeyEventsDuringInputProtection() const override;
 
   const std::vector<raw_ptr<views::RadioButton>>& GetRadioButtonsForTesting()
       const {