CVE-2025-55073 | Mattermost up to 10.5.11/10.11.3/10.12.0 MSTeams Plugin missing authentication

A vulnerability, which was classified as critical, was found in Mattermost up to 10.5.11/10.11.3/10.12.0. The impacted element is an unknown function of the component MSTeams Plugin Handler. The manipulation results in missing authentication.

This vulnerability is known as CVE-2025-55073. It is possible to launch the attack remotely. No exploit is available.

You should upgrade the affected component.VulDB Recent EntriesRead More