Mattermost: Security Vulnerabilities
Mattermost fails to sanitize code permalinks, allowing an attacker to preview code from private repositories by posting a specially crafted permalink on a channel.
CVSS Score
3.1
EPSS Score
0.005
Published
2023-06-16
Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters.
CVSS Score
4.3
EPSS Score
0.001
Published
2023-06-16
When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters, allowing an authenticated attacker to edit an arbitrary channel post.
CVSS Score
4.3
EPSS Score
0.001
Published
2023-06-16
Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.
CVSS Score
4.3
EPSS Score
0.001
Published
2023-06-16
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing `install` requests to the Apps allowing a regular user send install requests to the Apps.
CVSS Score
4.2
EPSS Score
0.001
Published
2023-06-16
Mattermost fails to properly check the permissions when executing commands allowing a member with no permissions to post a message in a channel to actually post it by executing channel commands.
CVSS Score
4.3
EPSS Score
0.001
Published
2023-06-16
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
0.001
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
0.001
Published
2023-05-12