Vulnerabilities > Mattermost > Mattermost Server > Low

DATE CVE VULNERABILITY TITLE RISK
2025-03-21 CVE-2025-27715 Incorrect Authorization vulnerability in Mattermost Server
Mattermost versions 9.11.x <= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.
network
low complexity
mattermost CWE-863
2.7
2024-08-22 CVE-2024-40884 Unspecified vulnerability in Mattermost Server
Mattermost versions 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 fail to properly enforce permissions which allows a team admin user without "Add Team Members" permission to disable the invite URL.
network
low complexity
mattermost
2.7
2024-04-26 CVE-2024-4198 Unspecified vulnerability in Mattermost Server
Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests.
network
low complexity
mattermost
2.7
2024-04-26 CVE-2024-4195 Unspecified vulnerability in Mattermost Server
Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.
network
low complexity
mattermost
2.7
2024-04-05 CVE-2024-29221 Unspecified vulnerability in Mattermost Server
Improper Access Control in Mattermost Server versions 9.5.x before 9.5.2, 9.4.x before 9.4.4, 9.3.x before 9.3.3, 8.1.x before 8.1.11 lacked proper access control in the `/api/v4/users/me/teams` endpoint allowing a team admin to get the invite ID of their team, thus allowing them to invite users, even if the "Add Members" permission was explicitly removed from team admins.
network
low complexity
mattermost
3.8
2024-04-05 CVE-2024-21848 Improper Check for Dropped Privileges vulnerability in Mattermost Server
Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel
network
high complexity
mattermost CWE-273
3.1
2024-02-29 CVE-2024-1949 Race Condition vulnerability in Mattermost Server
A race condition in Mattermost versions 8.1.x before 8.1.9, and 9.4.x before 9.4.2 allows an authenticated attacker to gain unauthorized access to individual posts' contents via carefully timed post creation while another user deletes posts.
network
high complexity
mattermost CWE-362
2.6
2024-02-09 CVE-2024-23319 Cross-Site Request Forgery (CSRF) vulnerability in Mattermost Server
Mattermost Jira Plugin fails to protect against logout CSRF allowing an attacker to post a specially crafted message that would disconnect a user's Jira connection in Mattermost only by viewing the message.
network
low complexity
mattermost CWE-352
3.5
2023-07-17 CVE-2023-3614 Resource Exhaustion vulnerability in Mattermost Server
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.
local
low complexity
mattermost CWE-400
3.3
2023-07-17 CVE-2023-3613 Incorrect Authorization vulnerability in Mattermost Server
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.
network
low complexity
mattermost CWE-863
3.5