Mattermost: >> Mattermost Server >> 0.5.0 Security Vulnerabilities
Mattermost fails to restrict which parameters' values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.
CVSS Score
4.3
EPSS Score
0.003
Published
2023-08-25
Mattermost WelcomeBot plugin fails to to validate the membership status when inviting or adding users to channels allowing guest accounts to be added or invited to channels by default.
CVSS Score
3.5
EPSS Score
0.001
Published
2023-07-17
Mattermost fails to properly validate a gif image file, allowing an attacker to consume a significant amount of server resources, making the server unresponsive for an extended period of time by linking to specially crafted image file.
CVSS Score
4.3
EPSS Score
0.001
Published
2023-07-17
Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link.
CVSS Score
4.3
EPSS Score
0.001
Published
2023-07-17
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
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
0.004
Published
2023-04-25
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
0.006
Published
2023-03-31