CVE-2025-58594 is a Missing Authorization vulnerability (CWE-862) identified in the themefusecom Brizy product, specifically affecting versions up to 2.7.12. This vulnerability arises from improperly configured access control mechanisms, allowing users with limited privileges (PR:L - privileges required: low) to perform actions or access resources beyond their authorization level without requiring user interaction (UI:N). The vulnerability is remotely exploitable over the network (AV:N) and does not impact confidentiality or availability but can lead to integrity loss (I:L), such as unauthorized modifications or changes within the application. The issue stems from the failure to enforce proper authorization checks on certain operations or endpoints, potentially enabling attackers to bypass security controls and manipulate data or settings they should not have access to. Although no known exploits are currently reported in the wild, the vulnerability's presence in a widely used website builder plugin like Brizy poses a risk, especially for websites relying on it for content management and design. The CVSS score of 4.3 (medium severity) reflects the moderate risk, considering the ease of exploitation and the limited scope of impact.

For European organizations using the Brizy plugin, this vulnerability could lead to unauthorized modifications of website content or configurations, potentially undermining data integrity and trustworthiness of their online presence. While it does not directly compromise confidentiality or availability, unauthorized changes could deface websites, inject misleading information, or disrupt business operations indirectly. This is particularly critical for sectors where website integrity is paramount, such as e-commerce, government portals, and financial services. The risk is heightened for organizations with multiple users managing the website, as low-privilege users or compromised accounts could exploit this flaw to escalate their control. Additionally, regulatory compliance frameworks in Europe, such as GDPR, emphasize the protection of data integrity and security controls, so exploitation could lead to compliance issues or reputational damage.

To mitigate this vulnerability, European organizations should: 1) Immediately review and update the Brizy plugin to the latest patched version once available from themefusecom, as no patch links are currently provided but should be prioritized upon release. 2) Restrict plugin access strictly to trusted users and minimize the number of users with editing privileges to reduce the attack surface. 3) Implement additional access control layers at the web server or application firewall level to monitor and block unauthorized requests targeting Brizy endpoints. 4) Conduct regular audits of user permissions and website content changes to detect unauthorized modifications promptly. 5) Employ security monitoring tools to detect anomalous activities related to the plugin. 6) If patching is delayed, consider temporarily disabling the plugin or limiting its functionality until a fix is available. 7) Educate website administrators about the risks of privilege escalation and enforce strong authentication mechanisms to prevent account compromise.