CVE-2026-56724 Zammad: Incorrect implementation of permission checks in the knowledge base module
Users with limited permissions can access knowledge base items outside their assigned scope due to flawed permission checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56724?
CVE-2026-56724 is a high-severity missing authorization vulnerability in zammad, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary An issue with permission checks in the knowledge base management area has been identified. Under certain conditions, data validation for linked items was not fully enforced. This could have allowed users with limited read permissions to interact with items outside their assigned access scope. Data access has been strengthened in the current version through additional validation routines. This issue is fixed in version 7.0.2.
Which versions are affected by CVE-2026-56724?
How do I fix CVE-2026-56724?
No fix has been published for CVE-2026-56724 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-56724 being exploited?
There is no known exploitation of CVE-2026-56724 in the wild and no public exploit code.
Sources
Also known as GHSA-pv3q-74g5-w7fv.