CVE-2025-49937 is a missing authorization vulnerability identified in the Smash Balloon Social Post Feed WordPress plugin, specifically versions up to and including 4.3.2. This plugin is widely used to embed social media feeds, particularly Facebook posts, into WordPress websites. The vulnerability arises from incorrectly configured access control mechanisms, allowing users with low privileges (PR:L) to access or perform actions that should be restricted. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) indicates that the attack can be conducted remotely over the network without user interaction, requires low privileges, and impacts confidentiality to a limited degree without affecting integrity or availability. The missing authorization means that certain API endpoints or backend functions may be accessible without proper permission checks, potentially exposing sensitive information or enabling unauthorized data retrieval. Although no known exploits have been reported in the wild, the vulnerability poses a risk to websites relying on this plugin for social media integration. The lack of a patch link suggests that a fix may not yet be publicly available, emphasizing the need for vigilance and interim protective measures. The vulnerability was reserved in June 2025 and published in October 2025, indicating recent discovery and disclosure.

For European organizations, the primary impact of CVE-2025-49937 is the potential unauthorized disclosure of information embedded or managed through the Smash Balloon Social Post Feed plugin. This could include access to social media feed data or other sensitive configuration details that may be leveraged for further reconnaissance or targeted attacks. While the vulnerability does not allow modification or disruption of services, the confidentiality breach could undermine trust and expose organizations to reputational damage, especially those in sectors handling sensitive customer or corporate data. Organizations heavily reliant on WordPress for their web presence, particularly marketing, media, and e-commerce sectors, are at greater risk. The absence of known exploits reduces immediate threat levels but does not eliminate the risk of future exploitation. Given the plugin’s popularity, attackers may develop exploits to target European websites, potentially leading to data leakage or unauthorized information gathering. Compliance with GDPR and other data protection regulations may also be impacted if personal data is exposed due to this vulnerability.

1. Monitor official channels from Syed Balkhi and Smash Balloon for security patches and apply updates immediately once available. 2. In the interim, restrict access to the plugin’s administrative and API endpoints using web application firewalls (WAF) or server-level access controls to limit exposure to authenticated users only. 3. Implement strict role-based access controls (RBAC) within WordPress to ensure only trusted users have permissions related to the plugin. 4. Conduct regular audits of user privileges and plugin configurations to detect and remediate any misconfigurations. 5. Employ security plugins that can detect and block unauthorized access attempts or anomalous activities related to social feed integrations. 6. Consider temporarily disabling the Smash Balloon Social Post Feed plugin if it is not critical to business operations until a patch is released. 7. Educate site administrators about the risks of missing authorization vulnerabilities and the importance of timely updates and access management.