CVE-2026-92059
Incorrect boundary conditions in the DOM: Editor component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
- Published Sep 15, 2026
- CVSS 9.3 critical
- 0.1% chance of exploitation in the next 30 days (EPSS)
- A fix is available