CVE-2025-20621 | Mattermost up to 2.23.0/9.11.5/10.0.3/10.1.3/10.2.0 improper validation of specified type of input

A vulnerability classified as problematic was found in Mattermost up to 2.23.0/9.11.5/10.0.3/10.1.3/10.2.0. This vulnerability affects unknown code. The manipulation leads to improper validation of specified type of input.

This vulnerability was named CVE-2025-20621. The attack can be initiated remotely. There is no exploit available.

It is recommended to upgrade the affected component.