CVE-2026-100276

In JetBrains YouTrack before 2026.2.19197 guest users could remove a workflow action's visibility restriction and run the action...

CVE-2026-100276: Incorrect Authorization

In JetBrains YouTrack before 2026.2.19197 guest users could remove a workflow action's visibility restriction and run the action...

CVE-2026-23933

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid...

CVE-2026-23933

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid...

CVE-2026-23933 Hardcoded session key in Zabbix 7.4

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid...

CVE-2026-23933

In Zabbix 7.4 , a cryptographic key used for signing Frontend sessions was erroneously written to the database seed. This vulnerability specifically impacts deployments utilizing both SAML authentication and guest users , where the key can be used to forge valid session cookies, potentially leadi...

EUVD-2026-60737

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid...

PT-2026-76959

Name of the Vulnerable Software and Affected Versions Zabbix version 7.4 Description The cryptographic key used for signing Frontend sessions is incorrectly written to the database seed. This issue affects deployments that simultaneously use SAML authentication and guest users, allowing the key t...

PYSEC-2026-1600 Mage AI incorrectly gives privileges to users with deleted accounts

Guest users in the Mage AI framework that remain logged in after their accounts are deleted, are mistakenly given high privileges and specifically given access to remotely execute arbitrary code through the Mage AI terminal server...

GO-2026-5512 Mattermost allows authenticated guest users to enumerate user IDs outside their allowed visibility scope in github.com/mattermost/mattermost-server

Mattermost allows authenticated guest users to enumerate user IDs outside their allowed visibility scope in github.com/mattermost/mattermost-server...

CVE-2026-8823 User Manager can demote bot accounts to guest without bot-management permission

Mattermost versions 11.7.x = 11.7.0, 10.11.x = 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669...

CVE-2026-3433 Mattermost fails to scope role_updated websocket events to authorized team and channel members

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to restrict roleupdated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change...

SQL Injection

XWiki Full Calendar Macro is vulnerable to SQL Injection. The vulnerability is due to a SQL injection vulnerability by accessing database info or starting a DoS attack, where users with the right to view the Calendar.JSONService page including guest users can exploit this issue and access databas...

CVE-2025-13874

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with Guest permissions to view issues in projects they were not authorized to access...

CVE-2025-13874

Removed by vendor...

CVE-2025-13874 Authorization Bypass Through User-Controlled Key in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with Guest permissions to view issues in projects they were not authorized to access...

Improper Access Control

github.com/mattermost/mattermost is vulnerable to improper access control. The vulnerability is due to insufficient restriction on the archived channel search API, which allows a guest user to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

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 via the group retrieval endpoint. An attacker can enumerate user IDs outside their allowed visibility scope by sending...

GHSA-MPC7-MM28-F6WQ Mattermost allows authenticated guest users to enumerate user IDs outside their allowed visibility scope

Mattermost versions 11.2.x = 11.2.2, 10.11.x = 10.11.10, 11.4.x = 11.4.0, 11.3.x = 11.3.1 fail to apply view restrictions when retrieving group member IDs, which allows authenticated guest users to enumerate user IDs outside their allowed visibility scope via the group retrieval endpoint...

CVE-2026-3115

Mattermost versions 11.2.x = 11.2.2, 10.11.x = 10.11.10, 11.4.x = 11.4.0, 11.3.x = 11.3.1 fail to apply view restrictions when retrieving group member IDs, which allows authenticated guest users to enumerate user IDs outside their allowed visibility scope via the group retrieval endpoint...