CVE-2026-100831 | Mozilla Firefox up to 153.3/156 DOM UI Events/Focus use after free

A vulnerability was found in Mozilla Firefox up to 153.3/156. It has been rated as critical. This affects an unknown function of the component DOM UI Events/Focus Handler. This manipulation causes use after free.

This vulnerability is tracked as CVE-2026-100831. The attack is possible to be carried out remotely. No exploit exists.

Upgrading the affected component is advised.VulDB Recent EntriesRead More