CVE-2026-50543
Dashboard / Vulnerabilities / CVE-2026-50543
Summary: Xibo: Missing Authorization on POST /displaygroup/criteria/{displayGroupId} Allows Arbitrary Scheduling Criteria Injection to Player Devices
Details: 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.
References: https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3, https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50543.json, https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q, https://nvd.nist.gov/vuln/detail/CVE-2026-50543, https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25, https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0, https://github.com/xibosignage/xibo-cms/pull/3488
Affected packages
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