CVE-2026-50539 Xibo is an open source digital signage platform with a web content management system and Windows display player software.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-50539?
CVE-2026-50539 is a medium-severity vulnerability in xibosignage xibo-cms, published on 28 Oct 2026.
Official description
Xibo is an open source digital signage platform with a web content management system and Windows display player software. Prior to 4.4.3, missing object-level authorization on `/notification/export/{id}` allows an authenticated user to download attachments from any notification, including notifications created by administrators, by iterating over `sequential notification IDs`. Exploitation requires access to the `Notification Centre` to view past notifications, a privilege granted to non-administrators as standard. This issue is fixed in version 4.4.3.
Weakness: CWE-862
Which versions are affected by CVE-2026-50539?
How do I fix CVE-2026-50539?
No fix has been published for CVE-2026-50539 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-50539 being exploited?
There is no known exploitation of CVE-2026-50539 in the wild and no public exploit code.
Sources
Also known as GHSA-p4pg-v57g-7jf6.