Unauthorized Information Disclosure

github.com/mattermost/mattermost-server is vulnerable to Unauthorized Information Disclosure. The vulnerability is due to insufficient restriction of API access, allowing guest users to view information about public teams they are not members of via direct API calls...

GO-2025-3757 Mattermost allows guest users to view information about public teams they are not members of in github.com/mattermost/mattermost-server

Mattermost allows guest users to view information about public teams they are not members of in github.com/mattermost/mattermost-server...

GHSA-JWHW-XF5V-QGXC Mattermost allows guest users to view information about public teams they are not members of

Mattermost versions 10.5.x = 10.5.4, 9.11.x = 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/teamid...

CVE-2025-4128 Mattermost Guest User Information Disclosure Vulnerability

Mattermost versions 10.5.x = 10.5.4, 9.11.x = 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/teamid...

GO-2025-3730 Mattermost fails to properly enforce access controls for guest users in github.com/mattermost/mattermost-server

Mattermost fails to properly enforce access controls for guest users in github.com/mattermost/mattermost-server...

CVE-2025-48885

application-urlshortener create shortened URLs for XWiki pages. Versions prior to 1.2.4 are vulnerable to users with view access being able to create arbitrary pages. Any user even guests can create these docs, even if they don't exist already. This can enable guest users to denature the structur...

CVE-2025-48885 application-urlshortener users can create arbitrary pages as long as they have view access to them

application-urlshortener create shortened URLs for XWiki pages. Versions prior to 1.2.4 are vulnerable to users with view access being able to create arbitrary pages. Any user even guests can create these docs, even if they don't exist already. This can enable guest users to denature the structur...

CVE-2025-48885 application-urlshortener users can create arbitrary pages as long as they have view access to them

application-urlshortener create shortened URLs for XWiki pages. Versions prior to 1.2.4 are vulnerable to users with view access being able to create arbitrary pages. Any user even guests can create these docs, even if they don't exist already. This can enable guest users to denature the structur...

CVE-2025-1792

Mattermost versions 10.7.x = 10.7.0, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fail to properly enforce access controls for guest users accessing channel member information, allowing authenticated guest users to view metadata about members of public channels via the channel members API endpoint...

CVE-2025-1792 Improper Access Control in Mattermost Channel Member API

Mattermost versions 10.7.x = 10.7.0, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fail to properly enforce access controls for guest users accessing channel member information, allowing authenticated guest users to view metadata about members of public channels via the channel members API endpoint...

CVE-2025-1792 Improper Access Control in Mattermost Channel Member API

Mattermost versions 10.7.x = 10.7.0, 10.5.x = 10.5.3, 9.11.x = 9.11.12 fail to properly enforce access controls for guest users accessing channel member information, allowing authenticated guest users to view metadata about members of public channels via the channel members API endpoint...

CVE-2025-1792

CVE-2025-1792 affects Mattermost Server: 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x

PT-2025-23306 · Mattermost · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost versions 10.7.x through 10.7.0 Mattermost versions 10.5.x through 10.5.3 Mattermost versions 9.11.x through 9.11.12 Description: The issue is related to the failure of Mattermost to properly enforce access controls for guest users...

PT-2025-23334 · Unknown · Application-Urlshortener

Name of the Vulnerable Software and Affected Versions: application-urlshortener versions prior to 1.2.4 Description: The issue allows users with view access to create arbitrary pages, including guest users who do not have existing accounts. This can lead to the creation of a large number of pages...

CVE-2023-20959

In AddSupervisedUserActivity, guest users are not prevented from starting the activity due to missing permissions checks. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions:...

CVE-2022-1002

Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which allows registered users with special permissions to invite guest users to inject unescaped HTML content in the email invitations...

CVE-2021-25973

In Publify, 9.0.0.pre1 to 9.2.4 are vulnerable to Improper Access Control. “guest” role users can self-register even when the admin does not allow. This happens due to front-end restriction only...

Mattermost Permission Issues Vulnerability

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. Mattermost suffers from a privilege issue vulnerability that stems from insufficient privilege validation, which can be exploited by an attacker to add guest users via the API...

Mattermost Fails to Validate Team Invite Permissions

Mattermost versions 10.6.x = 10.6.1, 10.5.x = 10.5.2, 10.4.x = 10.4.4, 9.11.x = 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team...

PT-2025-21274 · Mattermost · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost versions 10.6.x through 10.6.1 Mattermost versions 10.5.x through 10.5.2 Mattermost versions 10.4.x through 10.4.4 Mattermost versions 9.11.x through 9.11.11 Description: The issue arises from incorrect permission checks, allowing...