CVE-2026-4723 | Mozilla Firefox up to 148 JavaScript Engine use after free

SecurityVulns

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 148. This vulnerability affects unknown code of the component JavaScript Engine. Performing a manipulation results in use after free.

This vulnerability was named CVE-2026-4723. The attack may be initiated remotely. There is no available exploit.

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