The vulnerability identified as CVE-2025-65036 affects the xwikisas xwiki-pro-macros product, specifically versions prior to 1.27.1. The issue stems from a missing authorization check (CWE-862) in the Remote Macros feature, which is designed to facilitate content migration from Confluence by executing Velocity scripts within XWiki detail pages. Due to the lack of permission verification, users with limited privileges can execute arbitrary Velocity code remotely. This can lead to remote code execution (RCE), allowing attackers to compromise the confidentiality, integrity, and availability of the affected systems. The vulnerability is exploitable over the network (AV:N), requires low privileges (PR:L), does not require user interaction (UI:N), and affects the system's confidentiality and integrity to a high degree, with a slight impact on availability, as reflected by the CVSS 3.1 score of 8.3. The flaw was publicly disclosed on December 5, 2025, and fixed in version 1.27.1 of xwiki-pro-macros. No known exploits have been reported in the wild yet, but the nature of the vulnerability makes it a critical risk for organizations using vulnerable versions. The vulnerability's exploitation could allow attackers to execute arbitrary code, potentially leading to data breaches, system compromise, and lateral movement within networks.

For European organizations, the impact of CVE-2025-65036 can be severe, especially for those relying on XWiki for collaborative documentation, knowledge management, and content migration from Confluence. Successful exploitation could lead to unauthorized remote code execution, enabling attackers to access sensitive data, modify or delete content, and disrupt business operations. This could result in data breaches, intellectual property theft, and reputational damage. Organizations in regulated industries such as finance, healthcare, and government sectors face additional compliance risks due to potential violations of GDPR and other data protection laws. The vulnerability's ease of exploitation and network accessibility increase the likelihood of targeted attacks or opportunistic exploitation by cybercriminals. Additionally, compromised systems could serve as footholds for further attacks within the organization's network, amplifying the overall risk.

To mitigate this vulnerability, European organizations should immediately upgrade xwiki-pro-macros to version 1.27.1 or later, where the missing authorization check has been implemented. Until the upgrade is applied, restrict access to XWiki instances to trusted users only and limit macro execution permissions to highly trusted administrators. Conduct an audit of existing macros and Velocity scripts to identify and disable any potentially unsafe or unnecessary macros. Implement network segmentation and firewall rules to limit external access to XWiki servers. Monitor logs for unusual macro execution patterns or unauthorized access attempts. Employ application-layer security controls such as Web Application Firewalls (WAFs) with custom rules to detect and block suspicious Velocity script execution. Finally, educate administrators and developers about secure macro usage and the risks of executing untrusted code within XWiki environments.