CVE-2026-52730Network attack vector

Restricted module-settings disclosure via misgrouped authorization condition

Published Aug 31, 2026 · Updated Sep 2, 2026

Missing authorization in Xibo Signage Xibo CMS before 4.4.3 allows remote authenticated users to read restricted module settings. Module::settingsForm evaluates a PHP authorization expression with incorrect operator precedence, bypassing its super-admin-only restriction and returning the full module entity. Access requires the Module View feature, which is not granted to non-admins by default; exposed data can be viewed but not changed.

CVSS severity4.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Xibo Signage Xibo CMS before 4.4.3 allows remote authenticated users to read restricted module settings. Module::settingsForm evaluates a PHP authorization expression with incorrect operator precedence, bypassing its super-admin-only restriction and returning the full module entity. Access requires the Module View feature, which is not granted to non-admins by default; exposed data can be viewed but not changed.

The record

CVE
CVE-2026-52730
Published
Aug 31, 2026
Updated
Sep 2, 2026
Vendor
Xibo Signage
Product
Xibo CMS
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Xibo Signage · Xibo CMSversion=< 4.4.3

Published CVSS scores

4.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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