CVE-2025-58029 is a medium severity vulnerability classified under CWE-862 (Missing Authorization) affecting the 'Classic Widgets with Block-based Widgets' product developed by Sumit Singh. This vulnerability arises due to insufficient access control mechanisms, allowing unauthorized users to access functionality that should be protected by Access Control Lists (ACLs). Specifically, the affected versions up to 1.0.1 do not properly enforce authorization checks, enabling attackers to invoke functions or access features without the necessary permissions. The CVSS v3.1 base score is 5.3, reflecting a network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact is limited to integrity loss (I:L) with no confidentiality or availability impact. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was published on September 22, 2025, with the reservation date of August 22, 2025. The missing authorization flaw could allow attackers to manipulate or alter data or functionality within the widget environment, potentially leading to unauthorized changes or disruptions in the affected application or website components that utilize these widgets.

For European organizations, this vulnerability could pose a moderate risk, especially for those relying on the Classic Widgets with Block-based Widgets in their web infrastructure or content management systems. The unauthorized access to functionality could lead to integrity violations, such as unauthorized content modifications, configuration changes, or injection of malicious content within web pages. While confidentiality and availability are not directly impacted, the integrity compromise can undermine trust in the affected systems and potentially facilitate further attacks or data corruption. Organizations in sectors with strict regulatory requirements for data integrity and operational security (e.g., finance, healthcare, government) may face compliance risks if exploited. Additionally, the ease of exploitation without authentication or user interaction increases the likelihood of automated attacks, which could affect multiple sites or services simultaneously.

Given the absence of official patches, European organizations should implement compensating controls immediately. These include: 1) Restricting network access to the affected widget components by limiting exposure to trusted internal networks or VPNs. 2) Employing web application firewalls (WAFs) with custom rules to detect and block unauthorized access attempts targeting widget functionalities. 3) Conducting thorough code reviews and manual authorization checks within the widget integration to identify and remediate missing ACL enforcement. 4) Monitoring logs for unusual access patterns or unauthorized function calls related to the widgets. 5) Planning for rapid deployment of patches or updates once available from the vendor. 6) Isolating or disabling the affected widget features if they are not critical to operations until a fix is applied. 7) Educating development and security teams about the risks of missing authorization controls to prevent similar issues in future deployments.