CVE-2025-49937 is a vulnerability identified in the Smash Balloon Social Post Feed WordPress plugin, specifically versions up to 4.3.2. The root cause is missing authorization checks, meaning that certain actions or data access points within the plugin do not properly verify whether the requesting user has the necessary permissions. This results from incorrectly configured access control security levels. The vulnerability allows authenticated users with low privileges (e.g., subscribers or contributors) to access information or functionality that should be restricted to higher privilege roles. The CVSS v3.1 base score is 4.3, reflecting a medium severity level, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), limited confidentiality impact (C:L), and no impact on integrity or availability (I:N/A:N). The vulnerability does not require user interaction and can be exploited remotely by authenticated users. No public exploits have been reported yet, but the risk remains for organizations that have not updated or mitigated the issue. The plugin is widely used to display social media feeds on WordPress sites, often by businesses and organizations to showcase Facebook posts. The missing authorization could lead to unauthorized data disclosure or access to administrative features, depending on the plugin's integration and configuration. The vulnerability was reserved in June 2025 and published in October 2025, with no patch links currently available, indicating that remediation may still be pending or in progress.

For European organizations, the primary impact of CVE-2025-49937 is unauthorized disclosure of data or access to restricted plugin functionality by users with limited privileges. This could lead to leakage of social media feed content or internal data exposed through the plugin interface. While the vulnerability does not directly affect system integrity or availability, unauthorized access could facilitate further reconnaissance or social engineering attacks. Organizations relying on the Smash Balloon Social Post Feed plugin for public-facing websites or intranet portals may face reputational damage if sensitive information is exposed. Additionally, compliance with GDPR and other data protection regulations could be impacted if personal data is inadvertently disclosed. The risk is heightened in environments with many authenticated users or contributors, such as media companies, marketing agencies, or large enterprises using WordPress extensively. Since exploitation requires authenticated access, the threat is somewhat limited to insiders or compromised accounts, but the ease of exploitation and network accessibility increase the risk profile. No known active exploitation reduces immediate urgency but does not eliminate the need for prompt mitigation.

1. Monitor official channels from Syed Balkhi and Smash Balloon for patches or updates addressing CVE-2025-49937 and apply them immediately upon release. 2. Until patches are available, restrict user roles and permissions to the minimum necessary, especially limiting access to users who do not require interaction with the social feed plugin. 3. Implement strict access control policies on WordPress sites, including multi-factor authentication (MFA) for all authenticated users to reduce the risk of account compromise. 4. Audit current user roles and remove or downgrade unnecessary privileged accounts to reduce the attack surface. 5. Use Web Application Firewalls (WAF) with custom rules to monitor and block suspicious requests targeting the plugin endpoints. 6. Regularly review plugin configurations and logs for unusual access patterns or attempts to exploit the vulnerability. 7. Educate site administrators and content managers about the risks of unauthorized access and the importance of timely updates. 8. Consider temporarily disabling the Smash Balloon Social Post Feed plugin if it is not critical to operations until a secure version is available.