GHSA-6RQH-8465-2XCW Mattermost vulnerable to Incorrect Implementation of Authentication Algorithm

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to invalidate the cache when a user account is converted to a bot which allows an attacker to login to the bot exactly one time via normal credentials...