Beware the Hidden Risk in Your Entra Environment

If you invite guest users into your Entra ID tenant, you may be opening yourself up to a surprising risk. A gap in access control in Microsoft Entra's subscription handling is allowing guest users to create and transfer subscriptions into the tenant they are invited into, while maintaining full...

GHSA-4578-6GJH-F2JM Mattermost allows an unauthorized Guest user access to Playbook

Mattermost versions 10.5.x = 10.5.5, 9.11.x = 9.11.15, 10.8.x = 10.8.0, 10.7.x = 10.7.2, 10.6.x = 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run...

Mattermost allows an unauthorized Guest user access to Playbook

Mattermost versions 10.5.x = 10.5.5, 9.11.x = 9.11.15, 10.8.x = 10.8.0, 10.7.x = 10.7.2, 10.6.x = 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run...

CVE-2025-3228

Mattermost versions 10.5.x = 10.5.5, 9.11.x = 9.11.15, 10.8.x = 10.8.0, 10.7.x = 10.7.2, 10.6.x = 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run...

CVE-2025-3228 Unauthorized Guest user access to Playbook

Mattermost versions 10.5.x = 10.5.5, 9.11.x = 9.11.15, 10.8.x = 10.8.0, 10.7.x = 10.7.2, 10.6.x = 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run...

CVE-2025-3228 Unauthorized Guest user access to Playbook

Mattermost versions 10.5.x = 10.5.5, 9.11.x = 9.11.15, 10.8.x = 10.8.0, 10.7.x = 10.7.2, 10.6.x = 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run...

CVE-2025-4128

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 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

CVE-2025-4128 affects Mattermost server: vulnerable products are Mattermost versions 10.5.x (up to 10.5.4) and 9.11.x (up to 9.11.13). The issue is an improper access restriction that allows guest users to bypass permissions and view information about public teams they are not members of via dire...

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...

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...

Mattermost Server 9.11.x < 9.11.13 / 10.5.x < 10.5.4 / 10.7.x < 10.7.1 Multiple Vulnerabilities (MMSA-2025-00457, MMSA-2025-00462)

The version of Mattermost Server installed on the remote host is prior to 9.11.13, 10.5.4, or 10.7.1. It is, therefore, affected by multiple vulnerabilities as referenced in the MMSA-2025-00457 and MMSA-2025-00462 advisories. - Mattermost versions 10.7.x = 10.7.0, 10.5.x = 10.5.3, 9.11.x = 9.11.1...

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...

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...

Mattermost fails to properly enforce access controls for guest users

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...

GHSA-HC6V-386M-93PQ Mattermost fails to properly enforce access controls for guest users

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...

SUSE CVE-2025-3446

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...

CVE-2024-5005

An issue has been discovered discovered in GitLab EE/CE affecting all versions starting from 11.4 before 17.2.9, all versions starting from 17.3 before 17.3.5, all versions starting from 17.4 before 17.4.2 It was possible for guest users to disclose project templates using the API...

CVE-2024-48245

Vehicle Management System 1.0 is vulnerable to SQL Injection. A guest user can exploit vulnerable POST parameters in various administrative actions, such as booking a vehicle or confirming a booking. The affected parameters include "Booking ID", "Action Name", and "Payment Confirmation ID", which...

CVE-2024-5470

An issue was discovered in GitLab CE/EE affecting all versions starting from 17.0 prior to 17.0.4 and from 17.1 prior to 17.1.2 where a Guest user with adminpushrules permission may have been able to create project-level deploy tokens...