PT-2026-91992

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird ESR versions prior to 153.3 Description A use-after-free issue exists in the Graphics: Text component. Use-after-free is a memory...

PT-2026-91993

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A mitigation bypass exists within the Enterprise Policies component. Recommendations Update...

PT-2026-92003

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A use-after-free issue exists in the Widget: Gtk component. Use-after-free is a memory corrupti...

PT-2026-92005

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description Spoofing issue in the DOM: Navigation component. The Document Object Model DOM is a programming...

PT-2026-92007

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description Incorrect boundary conditions in the Widget: Win32 component allow for a sandbox escape. A...

PT-2026-92012

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description Incorrect boundary conditions exist within the Networking component. Recommendations Update...

PT-2026-92014

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A denial-of-service issue exists within the Security component. Recommendations Update Firefox ...

PT-2026-91974

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A mitigation bypass exists within the Remote Settings Client component. Recommendations Update...

PT-2026-91984

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A sandbox escape is possible due to incorrect boundary conditions within the Widget: Win32...

PT-2026-91985

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A use-after-free issue exists in the Widget: Win32 component. Use-after-free is a memory...

PT-2026-91989

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description Privilege escalation exists within the Graphics: CanvasWebGL component. CanvasWebGL is a...

PT-2026-91994

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A use-after-free issue exists in the Graphics component. Use-after-free is a memory corruption...

PT-2026-92008

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description Incorrect boundary conditions exist within the Safe Browsing component. Recommendations Update...

PT-2026-92010

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A mitigation bypass exists within the Popup Blocker component. Recommendations Update Firefox t...

PT-2026-92013

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A denial-of-service issue exists within the SVG component. Recommendations Update Firefox to...

PT-2026-92015

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A mitigation bypass exists within the Widget: Win32 component. Recommendations Update Firefox t...

PT-2026-91975

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A mitigation bypass exists within the DOM Notifications component. The Document Object Model DO...

PT-2026-91977

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A mitigation bypass exists within the DOM: Networking component. The Document Object Model DOM ...

PT-2026-91978

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description A race condition exists within the DOM: Content Processes component. A race condition is a...

PT-2026-91988

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 153.3 Description Privilege escalation is possible due to uninitialized memory within the Graphics: CanvasWebGL...