Security Advisory

ZAA-2025-04

April 2, 2025 · 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-2025-04
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

An authenticated agent with knowledge base permissions was able to use the Zammad API to fetch knowledge base content which they have no permission for.

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-2025-04

Please see our security policy and send remarks on security issues exclusively to security@zammad.com.