xibosignage xibo-cms up to 4.4.0 Notification Body cross site scripting

Summaryinfo

A vulnerability was found in xibosignage xibo-cms up to 4.4.0. It has been rated as problematic. This issue affects some unknown processing of the component Notification Body Handler. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2026-31953. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in xibosignage xibo-cms up to 4.4.0 and classified as problematic. Affected by this vulnerability is an unknown function of the component Notification Body Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Xibo is an open source digital signage platform with a web content management system and Windows display player software. A stored Cross-Site Scripting (XSS) vulnerability in versions prior to 4.4.1 allows an authenticated user with notification creation permissions to inject arbitrary JavaScript into the notification body. When the notification is set as an "interrupt," the payload executes automatically in the browser of any targeted user upon login, requiring zero user interaction. Exploitation of the vulnerability is possible on behalf of an authorized user who has both of the following privileges, which are not granted to non-admins as standard: Access to the Notification Centre to view past notifications, and include "Add Notification" button to allow for the creation of new notifications. Users should upgrade to version 4.4.1 which fixes this issue. Upgrading to a fixed version is necessary to remediate. Users unable to upgrade should revoke such privileges from users they do not trust.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-31953 since 03/10/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 4.4.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Type

• Content Management System

Vendor

• xibosignage

Name

• xibo-cms

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4.0

Website

• Product: https://github.com/xibosignage/xibo-cms/

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