A vulnerability labeled as problematic has been found in Mattermost up to 10.11.22/11.7.7/11.8.4/11.9.0/11.9.x . Impacted is an unknown function of the component Boards Archive Import Handler . Executing a manipulation can lead to allocation of resources. This vulnerability is registered as CVE-2026-14298 . It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.