CVE-2026-50543 Details
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 authorization on `POST /displaygroup/criteria/{displayGroupId}` allows an authenticated user to send criteria updates to any display via `XMR`. These criteria determine schedule changes and can alter playback, for example by causing content scheduled for rainy weather to play when it is not raining. Exploitation requires `Schedule Criteria` to be in use on the CMS. This issue is fixed in version 4.4.3.
A vulnerability in Xibo CMS prior to version 4.4.3 allows authenticated users to exploit missing authorization on the POST /displaygroup/criteria/{displayGroupId} endpoint. This vulnerability enables users to send arbitrary criteria updates to any display via XMR, potentially disrupting scheduled content playback. For instance, it could cause content meant for rainy weather to be displayed when it is not raining. The issue arises when 'Schedule Criteria' is active on the CMS.
Users should upgrade to Xibo CMS version 4.4.3 or later, which addresses this vulnerability. For those unable to upgrade, it is recommended to revoke CMS access from untrusted users.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 28, 2026CISA-ADP
Assessed Nov 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25 | [email protected] | Source CodeVendor |
| https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0 | [email protected] | Source CodeVendor |
| https://github.com/xibosignage/xibo-cms/pull/3488 | [email protected] | Source CodeVendor |
| https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3 | [email protected] | Release NotesVendor |
| https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta | [email protected] | Release NotesVendor |
| https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Xibo | <= 4.4.2 (semver) |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 4, 2026 | CVE Translated | [email protected] |
| Nov 3, 2026 | CVE Modified | CISA-ADP |
| Oct 28, 2026 | New CVE Received | [email protected] |