{"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","slug":"CVE-2026-50543","body":"## Overview\n\nXibo 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.\n\n## Affected\n\n- `xibo-cms < 4.4.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}