High severity · published Oct 28, 2026
CVE-2026-52729
Xibo: IDOR (Broken Object-Level Authorization) on PUT/DELETE /action/{id} Allows Arbitrary Layout Action Modification and Deletion
New
7.1
CVSS
–
EPSS
No
On KEV
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 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XI
xibo-cms · xibosignage
< 4.4.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52729
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-52729
x_refsource_CONFIRM
https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-7j3h-48f7-w4fr
x_refsource_MISC
https://github.com/xibosignage/xibo-cms/pull/3492
x_refsource_MISC
https://github.com/xibosignage/xibo-cms/commit/96d7b458781b8cd10e64788565fbdeffd15f08cf
x_refsource_MISC
https://github.com/xibosignage/xibo-cms/commit/efd13abf868e2386f40929ed6e4f36fead310f20
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
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