CVE-2026-3590 | Mattermost up to 10.11.12/11.3.2/11.4.2/11.5.0 toctou (EUVD-2026-22915)

A vulnerability marked as critical has been reported in Mattermost up to 10.11.12/11.3.2/11.4.2/11.5.0. Affected is an unknown function. This manipulation causes time-of-check time-of-use.

This vulnerability is tracked as CVE-2026-3590. The attack is possible to be carried out remotely. No exploit exists.

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