1641 matches found
Improper Access Control
github.com/mattermost/mattermost-server is vulnerable to improper access control. The vulnerability is due to insufficient enforcement of access restrictions, which allows guest users to access metadata about members of public channels via the channel members API endpoint...
Improper Access Control
github.com/mattermost/mattermost-server is vulnerable to improper access control. The vulnerability is due to insufficient enforcement of access restrictions for System Manager roles, allowing users to access unauthorized team details via direct API requests even when configured with 'No access' ...
Incorrect Authorization
Overview github.com/mattermost/mattermost/server/channels/api4/ is a Affected versions of this package are vulnerable to Incorrect Authorization. due to improper access controls in the team invite modification endpoint /api/v4/teams/:teamId/privacy. An attacker can escalate privileges by...
Improper Access Control
github.com/mattermost/mattermost-server is vulnerable to improper access control. The vulnerability is due to insufficient permission checks when changing team privacy settings, allowing unauthorized team administrators to access and modify team invite IDs via the /api/v4/teams/:teamId/privacy...
CVE-2025-3230
CVE-2025-3230 affects Mattermost Server versions 9.11.x (<=9.11.12), 10.5.x (<=10.5.3), 10.6.x (<=10.6.2), and 10.7.x (
CVE-2025-3230 Bypass of System Admin User Deactivation Controls for Personal Access Tokens in Mattermost Server
Mattermost versions 10.7.x = 10.7.0, 10.6.x = 10.6.2, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via continued usage of previous...
CVE-2025-3230 Bypass of System Admin User Deactivation Controls for Personal Access Tokens in Mattermost Server
Mattermost versions 10.7.x = 10.7.0, 10.6.x = 10.6.2, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via continued usage of previous...
CVE-2025-3913 Team Privacy Settings Authorization Bypass in Mattermost Server
Mattermost versions 10.7.x = 10.7.0, 10.6.x = 10.6.2, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fail to properly validate permissions when changing team privacy settings, allowing team administrators without the 'invite user' permission to access and modify team invite IDs via the...
CVE-2025-3913 Team Privacy Settings Authorization Bypass in Mattermost Server
Mattermost versions 10.7.x = 10.7.0, 10.6.x = 10.6.2, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fail to properly validate permissions when changing team privacy settings, allowing team administrators without the 'invite user' permission to access and modify team invite IDs via the...
CVE-2024-21848
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...
CVE-2024-29221
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,...
CVE-2024-28949
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 don't limit the number of user preferences which allows an attacker to send a large number of user preferences potentially causing denial of service...
CVE-2024-28053
Resource Exhaustion in Mattermost Server versions 8.1.x before 8.1.10 fails to limit the size of the payload that can be read and parsed allowing an attacker to send a very large email payload and crash the server...
CVE-2023-2514
Mattermost Sever fails to redact the DB username and password before emitting an application log during server initialization...
CVE-2020-14457
An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the updateteam WebSocket event, aka MMSA-2020-0012...
CVE-2020-14458
An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the "get channel by name" API, aka MMSA-2020-0004...
CVE-2020-14450
An issue was discovered in Mattermost Server before 5.22.0. The markdown renderer allows attackers to cause a denial of service client-side, aka MMSA-2020-0017...
CVE-2020-14453
An issue was discovered in Mattermost Server before 5.21.0. Socket read operations are not appropriately restricted, which allows attackers to cause a denial of service, aka MMSA-2020-0005...