CVE-2026-118176 | Mozilla Thunderbird up to 153.5/158 Mailbox URL improper authentication

October 27, 2026 Yanac

A vulnerability was found in Mozilla Thunderbird up to 153.5/158. It has been rated as problematic. This affects an unknown part of the component Mailbox URL Handler. Performing a manipulation results in improper authentication.

This vulnerability is cataloged as CVE-2026-118176. It is possible to initiate the attack remotely. There is no exploit available.

Upgrading the affected component is advised.VulDB Recent EntriesRead More