CVE-2026-6758 | Mozilla Firefox up to 149 WebAssembly use after free

April 21, 2026 Yanac

A vulnerability identified as critical has been detected in Mozilla Firefox up to 149. Impacted is an unknown function of the component WebAssembly. The manipulation leads to use after free.

This vulnerability is documented as CVE-2026-6758. The attack can be initiated remotely. There is not any exploit available.

You should upgrade the affected component.VulDB Recent EntriesRead More