CVE-2026-56723 Zammad: Missing authorization on ticket attachment download

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a customer who can view a ticket cannot see internal ticket articles through the article listing API. However, the same customer can directly request an attachment belonging to an internal article via the attachme...

EUVD-2026-87205

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a customer who can view a ticket cannot see internal ticket articles through the article listing API. However, the same customer can directly request an attachment belonging to an internal article via the attachme...

CVE-2026-56723

The Zammad helpdesk and customer support system contains an authorization bypass in versions prior to 7.0.2 . While internal ticket articles are correctly hidden from customers via the article listing API, the attachment download endpoint fails to enforce article-level authorization. This allows ...

CVE-2026-56723: Incorrect Authorization

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a customer who can view a ticket cannot see internal ticket articles through the article listing API. However, the same customer can directly request an attachment belonging to an internal article via the attachme...