CVE-2026-100791 | Mozilla Firefox up to 115.41/140.16/153.3/156 DOM use after free

September 29, 2026 Yanac

A vulnerability marked as critical has been reported in Mozilla Firefox up to 115.41/140.16/153.3/156. This vulnerability affects unknown code of the component DOM. The manipulation leads to use after free.

This vulnerability is traded as CVE-2026-100791. It is possible to initiate the attack remotely. There is no exploit available.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More