From 2b5f474bf08881a710f06fa9944b9044e1d6b949 Mon Sep 17 00:00:00 2001
From: Maciej Zieniuk <167752252+mzieniukbw@users.noreply.github.com>
Date: Wed, 31 Dec 2025 08:31:26 +0100
Subject: [PATCH] incorrectly serialized symmetric crypto key in session
 storage (#18150)

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

diff --git a/apps/browser/src/background/main.background.ts b/apps/browser/src/background/main.background.ts
index 2d1da8510c1..e4fbe1f4edf 100644
--- a/apps/browser/src/background/main.background.ts
+++ b/apps/browser/src/background/main.background.ts
@@ -578,7 +578,7 @@ export default class MainBackground {
           "ephemeral",
           "bitwarden-ephemeral",
         );
-        await sessionStorage.save("session-key", derivedKey);
+        await sessionStorage.save("session-key", derivedKey.toJSON());
         return derivedKey;
       });