CVE-2026-109720 | Mozilla Firefox up to 153.4/157 WebAssembly comparing

October 13, 2026 Yanac

A vulnerability classified as critical has been found in Mozilla Firefox up to 153.4/157. Affected by this vulnerability is an unknown functionality of the component WebAssembly. Performing a manipulation results in comparing instead of assigning.

This vulnerability is cataloged as CVE-2026-109720. It is possible to initiate the attack remotely. There is no exploit available.

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