Mattermost: Security Vulnerabilities
Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.
CVSS Score
6.5
EPSS Score
0.002
Published
2023-06-16
Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker's account is deactivated.
CVSS Score
6.2
EPSS Score
0.001
Published
2023-06-16
Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.
CVSS Score
4.3
EPSS Score
0.002
Published
2023-05-29
Mattermost Sever fails to redact the DB username and password before emitting an application log during server initialization.
CVSS Score
6.7
EPSS Score
0.002
Published
2023-05-12
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
CVSS Score
4.7
EPSS Score
0.001
Published
2023-05-12
Mattermost Desktop App fails to validate a mattermost server redirection and navigates to an arbitrary website
CVSS Score
5.4
EPSS Score
0.001
Published
2023-05-02
When archiving a team, Mattermost fails to sanitize the related Websocket event sent to currently connected clients. This allows the clients to see the name, display name, description, and other data about the archived team.
CVSS Score
3.1
EPSS Score
0.003
Published
2023-04-25
Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token.
CVSS Score
6.5
EPSS Score
0.003
Published
2023-04-20
Mattermost fails to redact from audit logs the user password during user creation and the user password hash in other operations if the experimental audit logging configuration was enabled (ExperimentalAuditSettings section in config).
CVSS Score
7.2
EPSS Score
0.002
Published
2023-04-17
When processing an email invite to a private channel on a team, Mattermost fails to validate the inviter's permission to that channel, allowing an attacker to invite themselves to a private channel.
CVSS Score
4.2
EPSS Score
0.002
Published
2023-03-31