TI-2026-30838 Aliases CVE-2026-42558

Xibo Vulnerable to Stored XSS and Iframe Sandbox Escape via Data Connector Script in DataSet

LOW 32CWE-116Published 2026-06-10 · Updated 2026-06-11

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Security bypass, Cross-site scripting
Confidentiality · integrity · availability: High · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-346 and CWE-79.

Summary

Xibo is an open source digital signage platform with a web content management system and Windows display player software. Prior to 4.4.2, a vulnerability chain consisting of Stored XSS and Iframe Sandbox escape in the Xibo CMS allows users with DataSet permissions to use the Data Connector functionality to craft messages which escape the sandbox and facilitate XSS. Exploitation of the vulnerability is possible on behalf of an authorized user who has both of the following privileges, which are not granted to non-admins as standard: Include "Add DataSet" button to allow for additional DataSets to be created independently to Layouts Users should upgrade to version 4.4.2 which fixes this issue. Upgrading to a fixed version is necessary to remediate. Users unable to upgrade should revoke such privileges from users they do not trust.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0011 1st percentileScored 2026-11-07

Fix Fixed xibo-cms (xibosignage): 4.4.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
xibosignage	xibo-cms	before 4.4.2	4.4.2	Patch available	CNA

xibo-cms Vendorxibosignage Affected before 4.4.2 Fixed in 4.4.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:xibosignage:xibo::::::::	—	—	xibosignage

cpe:2.3:a:xibosignage:xibo:*:*:*:*:*:*:*:* Versions — — ·xibosignage

Remediation

Fix · CNA xibo-cms (xibosignage) Fixed in 4.4.2

Timeline

2026-10-02 Threatist record created from CVE-2026-42558

References

Other 1

https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-6389-j56c-9fww

TI-2023-16354 Xibo CMS vulnerable to Remote Code Execution through Zip Slip CVSS 3.1HIGH 8.8
TI-2024-19204 Session Hijacking via XSS attack in header and session grid in Xibo CMS CVSS 3.1HIGH 8.8
TI-2013-05097 Directory traversal vulnerability in Spring Signage Xibo 1.2.x before 1.2.3 and 1.4.x… CVSS 2.0MEDIUM 5.0
TI-2024-27847 Xibo allows Sensitive Information Disclosure abusing SQL Injection in Xibo CMS DataSet Data Import CVSS 3.1HIGH 8.1
TI-2025-38637 Xibo CMS: Remote Code Execution through module templates CVSS 3.1HIGH 7.2
TI-2026-24496 Xibo CMS API has SQL Injection via DataSet Filter Parameter CVSS 3.1HIGH 8.1

See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences