# CVE-2026-52729: Xibo: IDOR (Broken Object-Level Authorization) on PUT/DELETE /action/{id} Allows Arbitrary Layout Action Modification and Deletion

Status: published. Published: 2026-10-28. Updated: 2026-11-02.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- xibosignage / xibo-cms: < 4.4.3 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: 0.29% as of 2026-11-02; percentile 21.83%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-7j3h-48f7-w4fr (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/xibosignage/xibo-cms/pull/3492 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/xibosignage/xibo-cms/commit/96d7b458781b8cd10e64788565fbdeffd15f08cf (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/xibosignage/xibo-cms/commit/efd13abf868e2386f40929ed6e4f36fead310f20 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-52729; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-52729; retrieved 2026-11-02; source updated Not reported

Revision: 4ba790a342afbab5e247514429c00b108c4916bceca7c6ab86507600b42d10cd

Canonical: https://y2.dev/cve/CVE-2026-52729

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