Medium 4.3Published Oct 28, 2026

CVE-2026-50543Xibo: Missing Authorization on POST /displaygroup/criteria/{displayGroupId} Allows Arbitrary Scheduling Criteria Injection to Player Devices

Updated under an hour ago (Oct 29, 2026, 7:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Received
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

xibosignage xibo-cms xibosignage:xibo_cms (from the name)	before 4.4.3	CNA record

References

References

https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-737f-mfxg-jv9q	x-refsource-confirm
https://github.com/xibosignage/xibo-cms/pull/3488	x-refsource-misc
https://github.com/xibosignage/xibo-cms/commit/93587cf872392e91534bb50aa6be071821383e25	x-refsource-misc
https://github.com/xibosignage/xibo-cms/commit/aeca5d6bfbc5eb8a825e6950913c9ab25dc9edc0	x-refsource-misc
https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3	x-refsource-misc
https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.