CVE-2025-52367 is a Cross Site Scripting (XSS) vulnerability identified in PivotX CMS version 3.0.0 RC 3. This vulnerability allows a remote attacker to inject and execute arbitrary code through the subtitle field of the CMS. XSS vulnerabilities occur when an application does not properly sanitize user-supplied input, allowing malicious scripts to be executed in the context of other users' browsers. In this case, the subtitle field is insufficiently sanitized, enabling attackers to craft payloads that execute when other users view the affected content. Although the exact affected versions are not specified beyond 3.0.0 RC 3, the vulnerability is present in at least this release candidate version. No CVSS score or known exploits in the wild have been reported at the time of publication. The lack of a patch link suggests that a fix may not yet be available or publicly disclosed. The vulnerability could be exploited remotely without authentication, as the subtitle field is typically user-editable content in CMS platforms. This type of XSS can lead to session hijacking, defacement, redirection to malicious sites, or execution of arbitrary JavaScript in users' browsers, potentially compromising user data and trust in the affected websites.

For European organizations using PivotX CMS 3.0.0 RC 3, this vulnerability poses a risk to the confidentiality and integrity of user sessions and data. Attackers could exploit the XSS flaw to steal authentication cookies, perform unauthorized actions on behalf of users, or deliver malware through drive-by downloads. This can lead to reputational damage, data breaches involving personal or sensitive information protected under GDPR, and potential regulatory penalties. Since CMS platforms often serve as the backbone for corporate websites, blogs, or intranets, exploitation could disrupt business operations or erode customer trust. The impact is heightened for organizations with high web traffic or those handling sensitive user data. Although no known exploits are reported, the ease of exploitation typical of XSS vulnerabilities means attackers could develop exploits rapidly once details are public. European organizations relying on this CMS should consider the risk of targeted attacks, especially in sectors like finance, healthcare, and government where data protection is critical.

Organizations should immediately audit their use of PivotX CMS to determine if version 3.0.0 RC 3 or similar vulnerable versions are deployed. If so, they should restrict or sanitize input on the subtitle field using robust server-side validation and output encoding to neutralize malicious scripts. Employing Content Security Policy (CSP) headers can help mitigate the impact of XSS by restricting script execution sources. Web Application Firewalls (WAFs) configured to detect and block XSS payloads can provide an additional layer of defense. Since no official patch is currently available, organizations should consider disabling or limiting subtitle field usage until a fix is released. Monitoring web logs for suspicious input patterns and user reports of unusual behavior can aid early detection. Educating content editors about safe input practices and regularly updating CMS components when patches are released are also critical. Finally, organizations should prepare incident response plans to quickly address potential exploitation events.