CVE-2026-2456 | Mattermost service up to 10.11.10/11.2.2/11.3.0 Interactive Message memory allocation
A vulnerability was found in Mattermost service up to 10.11.10/11.2.2/11.3.0. It has been declared as problematic. This affects an unknown function of the component Interactive Message Handler. Executing a manipulation can lead to uncontrolled memory allocation.
This vulnerability appears as CVE-2026-2456. The attack may be performed from remote. There is no available exploit.
It is recommended to upgrade the affected component.