CVE-2026-42558
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
Xibo CMS prior to version 4.4.2 contains a vulnerability chain of Stored XSS and Iframe Sandbox escape. Users with DataSet permissions can use the Data Connector to craft messages that escape the sandbox and enable XSS.
Risk Assessment
An attacker can execute scripts in the context of other users' browsers, potentially leading to session theft or content modification.
Recommendation
Upgrade Xibo CMS to version 4.4.2. If upgrade is not possible, revoke 'Add DataSet' permissions from untrusted users.
Other vulnerabilities in Xibo CMS
See all- CVE-2026-42141High
Xibo is an open source digital signage platform that prior to version 4.4.1 had a Server-Side Request Forgery (SSRF) vulnerability. This allows users with Library upload permissions to make arbitrary HTTP requests from the CMS server to network resources.
- CVE-2023-33177High
A path traversal vulnerability exists in the Xibo CMS that allows an authenticated user to upload a specially crafted zip file. This can lead to the creation of files outside the CMS library directory, enabling remote code execution.
- CVE-2023-33181Medium
Xibo is a content management system (CMS) that in versions from 3.0.0 to 3.3.5 reveals sensitive information by printing stack traces when certain API routes are called with missing or invalid parameters. Users should upgrade to version 3.3.5, which fixes this issue.
- CVE-2023-33180Medium
An SQL injection vulnerability was discovered in the Xibo content management system in the `/display/map` API route, affecting versions from 3.2.0 to 3.3.2. This allows an authenticated user to exfiltrate data from the Xibo database by injecting specially crafted values into the `bounds` parameter.
- CVE-2023-33179Medium
An SQL injection vulnerability was discovered in the `nameFilter` function in the Xibo content management system, affecting versions from 3.2.0 to 3.3.5. This allows an authenticated user to exfiltrate data from the Xibo database by injecting specially crafted values for logical operators.
- CVE-2023-33178Medium
An SQL injection vulnerability was discovered in the Xibo content management system in the `/dataset/data/{id}` API. This allows an authenticated user to exfiltrate data from the Xibo database by injecting specially crafted values into the `filter` parameter.
Original NVD description (English source)
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.