From 85b5c6fbcf3eb4945fd5f79a84da97635c6494b7 Mon Sep 17 00:00:00 2001
From: Jonathan Prusik <jprusik@classynemesis.com>
Date: Thu, 22 Jan 2026 15:47:34 -0500
Subject: [PATCH] add optional chaining to username comparison of existing
 login ciphers

---
 apps/browser/src/autofill/background/notification.background.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/browser/src/autofill/background/notification.background.ts b/apps/browser/src/autofill/background/notification.background.ts
index 92c3fec7d94..6c8a768a0d8 100644
--- a/apps/browser/src/autofill/background/notification.background.ts
+++ b/apps/browser/src/autofill/background/notification.background.ts
@@ -724,7 +724,7 @@ export default class NotificationBackground {
     const ciphersByInputMatchCategory = ciphersForURL.reduce(
       (acc, { id, login }) => {
         const usernameInputMatchesCipher =
-          usernameFieldHasValue && login.username.toLowerCase() === normalizedUsername;
+          usernameFieldHasValue && login.username?.toLowerCase() === normalizedUsername;
         const passwordInputMatchesCipher =
           currentPasswordFieldHasValue && login.password === currentPasswordFieldValue;
         const newPasswordInputMatchesCipher =