Mattermost: Security Vulnerabilities
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
0.001
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
0.001
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
When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients.
CVSS Score
4.3
EPSS Score
0.002
Published
2023-03-31
Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file.
CVSS Score
7.3
EPSS Score
0.005
Published
2023-03-31
Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.
CVSS Score
6.5
EPSS Score
0.002
Published
2023-03-31
Mattermost fails to check the "Show Full Name" setting when rendering the result for the /plugins/focalboard/api/v2/users API call, allowing an attacker to learn the full name of a board owner.
CVSS Score
3.5
EPSS Score
0.002
Published
2023-03-22