Auth bypass in Xibosignage Xibo-Cms
CVE-2026-52729
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 access-control checks on `PUT/DELETE /action/{id}` allow an authenticated user to modify or delete actions on any Layout. Exploitation requires the privilege to allow edits, including deletion, to all created Layouts, which is granted to non-administrators as standard. This issue concerns `Layout actions` rather than the separately reported DataSet export vulnerability. This issue is fixed in version 4.4.3.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Xibosignage Xibo-Cms — versions < 4.4.3
Weakness classification (CWE)
References
- github.com/xibosignage/xibo-cms/security/advisories/GHSA-7j3h-48f7-w4fr
- github.com/xibosignage/xibo-cms/pull/3492
- github.com/xibosignage/xibo-cms/commit/96d7b458781b8cd10e64788565fbdeffd15f08cf
- github.com/xibosignage/xibo-cms/commit/efd13abf868e2386f40929ed6e4f36fead310f20
- github.com/xibosignage/xibo-cms/releases/tag/4.4.3
- github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta
Frequently asked questions
- What is CVE-2026-52729?
- CVE-2026-52729 is a high-severity vulnerability in Xibosignage Xibo-Cms, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-10-28.
- How severe is CVE-2026-52729?
- High severity. CVSS v3 base score is 7.1 out of 10.