Quick answers
- Is CVE-2026-65828 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-65828 being exploited in the wild.
- How severe is CVE-2026-65828?
- Informational severity, published 25 September 2026.
- Which products and versions are affected?
- Zammad prior to 7.1.2.
- Is there a fix for CVE-2026-65828?
- A patch was published on 2026-08-04: version 7.1.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-65828 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-65828?
- 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
The legacy destroy_form action in AttachmentsController performs authorization checks on show and destroy actions but fails to apply them to destroy_form, allowing authenticated users to delete UploadCache Store records belonging to other users based solely on a user-supplied form_id parameter. The vulnerability requires authentication and knowledge of another user's pending-upload UUID. An attacker gains the ability to silently remove temporary files before a victim submits a ticket or article; the fix in version 7.1.2 extends authorization checks to the destroy_form action.
Affected products
- Zammad Zammad prior to 7.1.2
Timeline
- 2026-08-04: disclosed
- 2026-08-04: patched: version 7.1.2