{"id":"CVE-2026-56728","published":"2026-09-25T18:17:26.797","lastModified":"2026-09-28T14:45:39.697","description":"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. The taskbar feature stores transient state for active user sessions, including auto-saved ticket drafts. Under certain conditions, the authorization check for taskbar item access is not enforced, allowing a user to read another user's taskbar item data. This vulnerability is fixed in 7.0.2.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-200","CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/zammad/zammad/commit/4ccd5d573023b66b0d0184914c92417e1780793f","tags":[]},{"url":"https://github.com/zammad/zammad/releases/tag/7.0.2","tags":[]},{"url":"https://github.com/zammad/zammad/security/advisories/GHSA-jvcg-5539-vvc3","tags":[]}],"exploitRefs":[{"url":"https://github.com/zammad/zammad/commit/4ccd5d573023b66b0d0184914c92417e1780793f","tags":[]},{"url":"https://github.com/zammad/zammad/releases/tag/7.0.2","tags":[]},{"url":"https://github.com/zammad/zammad/security/advisories/GHSA-jvcg-5539-vvc3","tags":[]}],"hasPoc":true,"ai":null}