{"id":"CVE-2026-50543","state":"PUBLISHED","title":"Xibo: Missing Authorization on POST /displaygroup/criteria/{displayGroupId} Allows Arbitrary Scheduling Criteria Injection to Player Devices","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.","publishedAt":"2026-10-28T15:32:51.861Z","updatedAt":"2026-10-28T15:32:51.861Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["xibosignage xibo-cms"],"affected":[{"vendor":"xibosignage","product":"xibo-cms","versions":[{"version":"< 4.4.3","status":"affected"}]}],"references":["https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q","https://github.com/xibosignage/xibo-cms/pull/3488","https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25","https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0","https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3","https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50543.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50543","state":"PUBLISHED","datePublished":"2026-10-28T15:32:51.861Z","dateUpdated":"2026-10-28T15:32:51.861Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-04T20:37:18.653Z"},"containers":{"cna":{"title":"Xibo: Missing Authorization on POST /displaygroup/criteria/{displayGroupId} Allows Arbitrary Scheduling Criteria Injection to Player Devices","descriptions":[{"lang":"en","value":"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":[{"vendor":"xibosignage","product":"xibo-cms","versions":[{"version":"< 4.4.3","status":"affected"}]}],"references":[{"url":"https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q","name":"https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/xibosignage/xibo-cms/pull/3488","name":"https://github.com/xibosignage/xibo-cms/pull/3488","tags":["x_refsource_MISC"]},{"url":"https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25","name":"https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25","tags":["x_refsource_MISC"]},{"url":"https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0","name":"https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0","tags":["x_refsource_MISC"]},{"url":"https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3","name":"https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3","tags":["x_refsource_MISC"]},{"url":"https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta","name":"https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-28T15:32:51.861Z"},"source":{"advisory":"GHSA-737f-mfxg-jv9q","discovery":"UNKNOWN"}}}}}