CVE-2026-8947 | Mozilla Firefox up to 115.35/140.10/150 WebIDL use after free

A vulnerability was found in Mozilla Firefox up to 115.35/140.10/150. It has been declared as critical. This vulnerability affects unknown code of the component WebIDL. Such manipulation leads to use after free.

This vulnerability is traded as CVE-2026-8947. The attack may be launched remotely. There is no exploit available.

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