{"affected":[{"product":"xibo-cms","source":"CNA: GitHub_M","vendor":"xibosignage","versions":[{"status":"affected","version":"< 4.4.3"}]}],"cveId":"CVE-2026-50543","cwes":["CWE-862"],"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.","epss":{"date":"2026-11-02","percentile":0.12764,"score":0.00222},"exploits":[],"kev":null,"metrics":[{"score":4.3,"severity":"medium","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}],"modifiedAt":1793711047124,"publishedAt":1793201571861,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/xibosignage/xibo-cms/pull/3488"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta"}],"remediation":[],"revision":"f20119d5dc8bbe808c03330e170930550a139ce2e4258a435fa2b382e08cd496","sources":[{"modifiedAt":1793711047124,"name":"CNA: GitHub_M","retrievedAt":1793714980092,"url":"https://www.cve.org/CVERecord?id=CVE-2026-50543"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793715001253,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-50543"}],"ssvc":{"assessedAt":1793711024615,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Xibo: Missing Authorization on POST /displaygroup/criteria/{displayGroupId} Allows Arbitrary Scheduling Criteria Injection to Player Devices","updatedAt":1793715001253}