CVE-2026-56728

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. T...

CVE-2026-56728 Zammad: Cross-User Taskbar Item Access Control Vulnerability

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. T...

CVE-2026-56728 Zammad: Cross-User Taskbar Item Access Control Vulnerability

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. T...

CVE-2026-56728

The open source helpdesk system Zammad contains a broken access control vulnerability in its GraphQL API prior to version 7.0.2 . An authenticated user can exploit this by crafting a request with a target user's taskbar identifier to read their taskbar item data . This data includes transient ses...

CVE-2026-56728 Zammad: Cross-User Taskbar Item Access Control Vulnerability

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. T...

CVE-2026-56728: Exposure of Sensitive Information to an Unauthorized Actor

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. T...

PT-2026-98942

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Description Broken access control in the GraphQL API allows an authenticated user to access taskbar item data belonging to another user. By crafting a request with the target user's taskbar identifier, an attacke...