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CVE-2025-10859
Published: Sep 30, 2025
Modified: Apr 13, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Firefox for iOS | unaffected 143.1 - <= * |
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