CVE-2026-3889 | Mozilla Thunderbird up to 140.8/148 ui layer (Nessus ID 303506 / WID-SEC-2026-0850)
A vulnerability was found in Mozilla Thunderbird up to 140.8/148. It has been rated as problematic. Affected by this vulnerability is an unknown functionality. This manipulation causes improper restriction of rendered ui layers.
This vulnerability is handled as CVE-2026-3889. The attack can be initiated remotely. There is not any exploit available.
Upgrading the affected component is advised.