CVE-2026-92017

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 115.41 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to 153.3

Description Privilege escalation exists within the DOM: Service Workers component. Service Workers are scripts that the browser runs in the background, separate from a web page, enabling features like push notifications and offline access.

Recommendations Update Firefox to version 156. Update Firefox ESR to version 115.41. Update Firefox ESR to version 140.16. Update Firefox ESR to version 153.3. Update Thunderbird to version 156. Update Thunderbird to version 140.16. Update Thunderbird to version 153.3.