Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

Incorrect Authorization

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of the Allow users to view archived channels setting in the threads interface. An attacker can gain unauthorized access to archived channel content and files by using the "Open in...

CVE-2025-41436

Mattermost versions 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads...

CVE-2025-41436

Mattermost versions 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads...

CVE-2025-11776

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

CVE-2025-11776

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

CVE-2025-41436 Unauthorized access to archived channel content via threads interface

Mattermost versions 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads...

CVE-2025-41436 Unauthorized access to archived channel content via threads interface

Mattermost versions 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads...

CVE-2025-41436

Mattermost Server

EUVD-2025-186557

Mattermost versions 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads...

CVE-2025-11776

Mattermost CVE-2025-11776 affects Mattermost Server versions earlier than 11.0.0. A flaw in access control on the archived channel search API (/api/v4/teams/{team_id}/channels/search_archived) allows guest users to discover archived public channels. Root cause: insufficient restrictions on archiv...

CVE-2025-11776 Guest user can discover archived public channels

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

CVE-2025-11776 Guest user can discover archived public channels

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

Mattermost 安全漏洞

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in versions prior to Mattermost 11 that stems from a failure to properly restrict access to the archive channel search API, which could lead to the discovery of archived...

Mattermost 安全漏洞

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in Mattermost versions prior to 11.0, which stems from a failure to properly implement a setting that allows users to view archived channels, which could result in a...