Quick answers
- Is CVE-2026-34248 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34248 being exploited in the wild.
- How severe is CVE-2026-34248?
- Medium severity, with a CVSS score of 5.7, published 8 April 2026.
- Which products and versions are affected?
- Zammad >= 7.0.0, < 7.0.1.
- Is there a fix for CVE-2026-34248?
- A patch was published on 2026-04-08: Fixed in version 7.0.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-34248 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-34248?
- Check whether you run Zammad at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An improper access control vulnerability (CWE-284) exists in Zammad's ticket detail view for shared organizations. When a customer user opens a ticket belonging to another user within the same shared organization, the system fails to filter internal-only fields. This results in the disclosure of sensitive attributes such as ticket priority and custom internal ticket attributes. The attack requires low privileges (a valid customer account within a shared organization) and some user interaction. The vulnerability is limited to information disclosure as affected users cannot modify the exposed fields. The issue is resolved in version 7.0.1.
Affected products
- Zammad Zammad >= 7.0.0, < 7.0.1
Timeline
- 2026-04-08: disclosed
- 2026-04-08: advisory
- 2026-04-08: patched: Fixed in version 7.0.1