CVE-2026-42558

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Source
https://cve.org/CVERecord?id=CVE-2026-42558
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42558.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42558
Aliases
  • GHSA-6389-j56c-9fww
Published
2026-06-10T21:39:09.547Z
Modified
2026-07-25T03:56:46.968210324Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N CVSS Calculator
Summary
Xibo Vulnerable to Stored XSS and Iframe Sandbox Escape via Data Connector Script in DataSet
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-116",
        "CWE-346",
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42558.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/xibosignage/xibo-cms

Affected ranges

Type
GIT
Repo
https://github.com/xibosignage/xibo-cms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4f5ec4f7d15e7599190268feacc650f26dfea014
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.4.2"
        }
    ]
}

Affected versions

1.*
1.6.0-rc1
1.7.0-alpha
1.7.0-alpha2
1.8.0
1.8.0-alpha
1.8.0-alpha2
1.8.0-alpha3
1.8.0-beta
1.8.0-rc1
1.8.0-rc2
1.8.0-rc3
2.*
2.0.0-alpha1
2.0.0-beta
2.0.0-beta.2
2.0.0-rc1
2.1.0-alpha1
2.1.0-alpha2
2.1.0-beta
2.1.0-rc1
2.2.0-alpha
2.2.0-alpha2
2.2.0-beta
2.2.0-rc1
2.3.0-alpha
2.3.0-beta
2.3.0-rc1
3.*
3.0.0-alpha
3.0.0-alpha2
3.0.0-alpha3
3.0.0-beta
3.0.0-rc1
3.1.0-alpha
3.1.0-beta
4.*
4.0.0
4.0.0-alpha
4.0.0-alpha2
4.0.0-beta
4.0.0-rc1
4.0.0-rc2
4.0.1
4.0.10
4.0.11
4.0.12
4.0.13
4.0.2
4.0.3
4.0.4
4.0.5
4.0.6
4.0.7
4.0.8
4.0.9
4.1.0
4.1.1
4.1.2
4.2.0
4.2.1
4.2.2
4.2.3
4.3.0
4.3.1
4.4.0
4.4.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42558.json"