CVE-2025-41088 is a stored Cross-Site Scripting (XSS) vulnerability identified in Xibo Signage's Xibo CMS version 4.1.2. This vulnerability stems from improper neutralization of user-supplied input during web page generation, specifically within the template management system. An attacker with limited privileges can exploit this by creating a template in the 'Templates' section, then adding a text element in the 'Global Elements' section, and finally injecting malicious JavaScript code into the 'Text' field. Because the input is not properly sanitized or validated, the malicious script is stored and later executed in the context of users who view the affected CMS pages. The vulnerability has a CVSS 4.0 base score of 5.1, reflecting medium severity, with characteristics including network attack vector, low attack complexity, no privileges required beyond limited template editing rights, and user interaction needed to trigger the payload. There are no known exploits in the wild as of the publication date. The vulnerability could allow attackers to perform actions such as session hijacking, defacement, or delivering further payloads to users interacting with the CMS interface. The issue is classified under CWE-79, which covers improper neutralization of input leading to XSS. The vulnerability affects version 4.1.2 of Xibo CMS, a popular open-source digital signage content management system used globally to manage and display digital content on signage networks.

For European organizations, the impact of CVE-2025-41088 can be significant, particularly for those relying on Xibo CMS for managing digital signage in public or semi-public environments such as retail, transportation hubs, corporate campuses, and educational institutions. Exploitation could lead to unauthorized script execution within the CMS user interface, potentially allowing attackers to hijack user sessions, steal credentials, or manipulate displayed content. This could result in reputational damage, misinformation dissemination, or unauthorized access to internal systems if the CMS is integrated with other infrastructure. Additionally, since digital signage often interfaces with customers or employees, the trustworthiness of displayed information could be compromised. The medium severity score indicates moderate risk, but the ease of exploitation by users with template editing privileges elevates concern. Organizations with multi-user CMS environments or less restrictive access controls are particularly vulnerable. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

To mitigate CVE-2025-41088 effectively, European organizations should: 1) Immediately review and restrict access controls to the 'Templates' and 'Global Elements' sections, ensuring only trusted and trained personnel have editing privileges. 2) Implement strict input validation and sanitization on all user-supplied content fields, particularly the 'Text' field in templates and global elements, to neutralize potentially malicious scripts. 3) Monitor CMS logs and user activity for unusual template creation or modification patterns that could indicate exploitation attempts. 4) If available, apply vendor patches or updates addressing this vulnerability as soon as they are released; if no patch exists, consider temporary workarounds such as disabling template editing or limiting CMS access to internal networks. 5) Educate CMS users about the risks of injecting untrusted content and enforce policies on content creation. 6) Employ Content Security Policy (CSP) headers on CMS web interfaces to reduce the impact of potential XSS payloads by restricting script execution sources. 7) Conduct regular security assessments and penetration testing focused on CMS components to detect and remediate similar vulnerabilities proactively.