Security Advisory
ZAA-2025-03
· Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad!
Security Advisory Details
- ID: ZAA-2025-03
- Date: 2025-04-02
- Title: Incorrect Access Control
- Severity: low
- Product: Zammad 6.4.x
- Fixed in: Zammad 6.5.0, 6.4.2
- References:
--> pending CVE assignment
Vulnerability Descriptions
Incorrect Access Control
In Zammad, only agents are able to see and work on shared article drafts. However, a logged in customer was able to see details about shared drafts for their customer tickets in the browser console, which may contain confidential information, and also to manipulate them via API.
Recommended Resolution
This vulnerability is fixed in the latest versions of Zammad and it is recommended to upgrade to one of these.
Fixed releases can be found at:
Or just update your Zammad if installed via OS package manager.
Additional information
Online version of this advisory: https://zammad.com/en/advisories/zaa-2025-03
Please see our security policy and send remarks on security issues exclusively to security@zammad.com.