Security Advisory

CVE-2025-10859

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-09-30 12:49:07

Last updated 2026-04-13 14:31:38

Assigner mozilla

State PUBLISHED

Description

Cookie storage for non-HTML temporary documents was being shared incorrectly with normal browsing content, allowing information from private tabs to escape Incognito mode even after the user closed all tabs. This vulnerability was fixed in Firefox for iOS 143.1.

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