CVE WatchSep 28, 2026

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

CVSS

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No CVSS

EPSS

0.3%

p26

KEV

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Exploit Today

0-100

Published: Sep 25, 2026 · Last modified: Sep 28, 2026 · CWE-200 · CWE-639

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-09-262026-10-25

Technical 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.

Official references

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