CVE-2026-74960 | Mozilla Firefox up to 140.13/153/153 WebExtensions isolation (Nessus ID 339042)
A vulnerability has been found in Mozilla Firefox up to 140.13/153/153 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component WebExtensions. Performing a manipulation results in improper isolation or compartmentalization.
This vulnerability is identified as CVE-2026-74960. The attack can be initiated remotely. There is not any exploit available.
The affected component should be upgraded.