CVE-2026-6754 | Mozilla Firefox up to 149 JavaScript Engine use after free

A vulnerability was found in Mozilla Firefox up to 149. It has been rated as critical. This vulnerability affects unknown code of the component JavaScript Engine. Performing a manipulation results in use after free.

This vulnerability is cataloged as CVE-2026-6754. It is possible to initiate the attack remotely. There is no exploit available.

Upgrading the affected component is advised.VulDB Recent EntriesRead More