CVE-2025-58073 Arbitrary Mattermost Team can be joined by manipulating the OAuth state

Mattermost versions 10.11.x = 10.11.1, 10.10.x = 10.10.2, 10.5.x = 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the OAuth state...

CVE-2025-58073

Mattermost Server (versions 10.11.x up to 10.11.1, 10.10.x up to 10.10.2, 10.5.x up to 10.5.10) is affected by CVE-2025-58073 due to insufficient verification of a user’s permission to join a team when using the original invite token. The underlying issue is the lack of proper authorization check...

CVE-2025-58075 Arbitrary Mattermost Team can be joined by manipulating the SAML RelayState

Mattermost versions 10.11.x = 10.11.1, 10.10.x = 10.10.2, 10.5.x = 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState...

CVE-2025-58075 Arbitrary Mattermost Team can be joined by manipulating the SAML RelayState

Mattermost versions 10.11.x = 10.11.1, 10.10.x = 10.10.2, 10.5.x = 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState...

SUSE CVE-2025-6227

Mattermost versions 10.5.x = 10.5.7, 9.11.x = 9.11.16 fail to negotiate a new token when accepting the invite which allows a user that intercepts both invite and password to send synchronization payloads to the server that originally created the invite via the REST API...

TikTok: Email address disclosure via invite token validatiion

The possibility of email address disclosure was found on a Business.TikTok.com endpoint as no rate limit was implemented on the invite token. We thank @noobbutcut3 for reporting this to our team...

Rocket.Chat: Registration bypass with leaked Invite Token

The Rocket.Chat API route 'validateInviteToken' was vulnerable to a registration bypass attack. The route allowed unauthenticated users to guess valid invite tokens by sending a crafted JSON payload with a regular expression. Once a valid token was obtained, the user could access private channels...