Vulnerabilities (CVE)

Filtered by vendor Mattermost Subscribe
Filtered by product Mattermost Server
Total 199 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-3581 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 8.1 HIGH
Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.
CVE-2023-3614 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 3.3 LOW
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.
CVE-2023-3582 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 4.3 MEDIUM
Mattermost fails to verify channel membership when linking a board to a channel allowing a low-privileged authenticated user to link a Board to a private channel they don't have access to, 
CVE-2023-5330 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 7.5 HIGH
Mattermost fails to enforce a limit for the size of the cache entry for OpenGraph data allowing an attacker to send a specially crafted request to the /api/v4/opengraph filling the cache and turning the server unavailable.
CVE-2023-3591 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 8.2 HIGH
Mattermost fails to invalidate previously generated password reset tokens when a new reset token was created.
CVE-2023-3584 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 3.1 LOW
Mattermost fails to properly check the authorization of POST /api/v4/teams when passing a team override scheme ID in the request, allowing an authenticated attacker with knowledge of a Team Override Scheme ID to create a new team with said team override scheme.
CVE-2023-5331 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 5.3 MEDIUM
Mattermost fails to properly check the creator of an attached file when adding the file to a draft post, potentially exposing unauthorized file information.
CVE-2023-3585 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 4.3 MEDIUM
Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link.
CVE-2023-3577 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 4.3 MEDIUM
Mattermost fails to properly restrict requests to localhost/intranet during the interactive dialog, which could allow an attacker to perform a limited blind SSRF.
CVE-2023-3613 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 3.5 LOW
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.
CVE-2023-3593 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 6.5 MEDIUM
Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.
CVE-2023-5333 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 6.5 MEDIUM
Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.
CVE-2023-3586 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 5.4 MEDIUM
Mattermost fails to disable public Boards after the "Enable Publicly-Shared Boards" configuration option is disabled, resulting in previously-shared public Boards to remain accessible.
CVE-2023-3590 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 7.5 HIGH
Mattermost fails to delete card attachments in Boards, allowing an attacker to access deleted attachments.
CVE-2023-1776 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 5.4 MEDIUM
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.
CVE-2023-1774 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 5.4 MEDIUM
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.
CVE-2023-2281 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 4.3 MEDIUM
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.
CVE-2023-1775 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 6.5 MEDIUM
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.
CVE-2023-2515 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 8.8 HIGH
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
CVE-2023-1831 1 Mattermost 1 Mattermost Server 2023-12-10 N/A 7.5 HIGH
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).