First published: Tue Nov 26 2024(Updated: )
A flaw in handling fullscreen transitions may have inadvertently caused the application to become stuck in fullscreen mode when a modal dialog was opened during the transition. This issue left users unable to exit fullscreen mode using standard actions like pressing "Esc" or accessing right-click menus, resulting in a disrupted browsing experience until the browser is restarted. *This bug only affects the application when running on macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.
Credit: security@mozilla.org
Affected Software | Affected Version | How to fix |
---|---|---|
Mozilla Thunderbird | <133 | 133 |
Mozilla Thunderbird | <128.5 | 128.5 |
Mozilla Firefox ESR | <128.5 | 128.5 |
Mozilla Firefox | <133 | 133 |
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(Appears in the following advisories)
(Found alongside the following vulnerabilities)