---
id: CVE-2026-50543
title: >-
  Xibo: Missing Authorization on POST /displaygroup/criteria/{displayGroupId}
  Allows Arbitrary Scheduling Criteria Injection to Player Devices
summary: >-
  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 use…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: xibosignage
product: xibo-cms
affected:
  - xibo-cms < 4.4.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-03T13:03:44.615664Z'
published: '2026-10-28'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T13:04:07.124Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-50543'
references:
  - url: >-
      https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q
    label: >-
      https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q
  - url: 'https://github.com/xibosignage/xibo-cms/pull/3488'
    label: 'https://github.com/xibosignage/xibo-cms/pull/3488'
  - url: >-
      https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25
    label: >-
      https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25
  - url: >-
      https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0
    label: >-
      https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0
  - url: 'https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3'
    label: 'https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3'
  - url: 'https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta'
    label: 'https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta'
tags:
  - cve.org
epss: 0.00222
epssPercentile: 0.1286
ingestedAt: '2026-10-28T16:13:50.586Z'
---

## Overview

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.

## Affected

- `xibo-cms < 4.4.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.