CVE-2026-16396 | Mozilla Firefox up to 140.12/152 WebExtensions Remote Code Execution

July 21, 2026 Yanac

A vulnerability described as critical has been identified in Mozilla Firefox up to 140.12/152. Affected is an unknown function of the component WebExtensions. Executing a manipulation can lead to Remote Code Execution.

This vulnerability is handled as CVE-2026-16396. The attack can be executed remotely. There is not any exploit available.VulDB Recent EntriesRead More