Description
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to to verify that the token used during the code exchange originates from the same authentication flow, which allows an authenticated user to perform account takeover via a specially crafted email address used when switching authentication methods and sending a request to the /users/login/sso/code-exchange endpoint. The vulnerability requires ExperimentalEnableAuthenticationTransfer to be enabled (default: enabled) and RequireEmailVerification to be disabled (default: disabled).
Problem types
CWE-303: Incorrect Implementation of Authentication Algorithm
Product status
11.0.0 (semver)
10.12.0 (semver)
10.11.0 (semver)
10.5.0 (semver)
11.1.0
11.0.3
10.12.2
10.11.5
10.5.13
Credits
daw10
References
mattermost.com/security-updates
