CVE-2026-31956Network attack vector

Cross-user data disclosure via unchecked object identifiers

Published Apr 24, 2026 · Updated Apr 24, 2026

Authorization bypass in Xibo CMS before 4.4.1 allows remote authenticated users to read other users' campaign previews and saved reports. Preview and SavedReport handlers invoke disableUserCheck, suppressing ownership filtering while their controllers omit an equivalent authorization check. Access requires an account allowed to view layouts, campaigns, or saved reports; crafted URLs disclose cross-user content without reported write or service impact.

CVSS severity4.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Xibo CMS before 4.4.1 allows remote authenticated users to read other users' campaign previews and saved reports. Preview and SavedReport handlers invoke disableUserCheck, suppressing ownership filtering while their controllers omit an equivalent authorization check. Access requires an account allowed to view layouts, campaigns, or saved reports; crafted URLs disclose cross-user content without reported write or service impact.

The record

CVE
CVE-2026-31956
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
Xibo Signage
Product
Xibo CMS
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 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=< 4.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Xibo Signage · Xibo CMSversion=< 4.4.1

Published CVSS scores

4.3GitHub, Inc.CVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-639Authorization Bypass Through User-Controlled Key
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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