CVE-2026-50539

MediumCVSS 6.5/10Last modified Nov 4, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-862

Affected software

Vendor	Product	Versions
xibosignage	xibo-cms	< 4.4.3

References

Timeline

Published: Oct 28, 2026
Last modified: Nov 4, 2026
NVD status: Deferred

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