CVE-2025-49937 is a missing authorization vulnerability identified in the Smash Balloon Social Post Feed WordPress plugin, specifically affecting 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 stems from improperly configured access control mechanisms, allowing users with limited privileges (authenticated but low-level users) to bypass authorization checks and access or manipulate data or functionality that should be restricted. According to the CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N), the attack can be executed remotely over the network with low attack complexity, requires some privileges (authenticated user), and no user interaction. The impact is limited to confidentiality, meaning unauthorized users may gain access to sensitive information exposed by the plugin, but it does not allow modification or disruption of service. No known exploits have been reported in the wild as of the publication date. The vulnerability is particularly relevant for websites that rely on this plugin to display social media content, as unauthorized access could lead to data leakage or privacy concerns. The vendor has not yet published a patch link, indicating that remediation may still be pending or in progress.

For European organizations, the confidentiality breach could expose sensitive social media content or internal data linked via the plugin, potentially leading to reputational damage or privacy violations under GDPR. Organizations in sectors such as media, marketing, e-commerce, and public services that use WordPress and this plugin to display social feeds are at risk. While the vulnerability does not affect data integrity or availability, unauthorized data exposure can facilitate further social engineering or targeted attacks. The medium severity rating reflects the limited scope of impact but acknowledges the ease of exploitation by authenticated users. Since the vulnerability requires authentication, the risk is somewhat mitigated by strong access controls, but compromised or insider accounts could be leveraged by attackers. The absence of known exploits reduces immediate threat but does not eliminate future risk, especially as exploit code could be developed once the vulnerability details are public.

1. Monitor the vendor’s official channels for patch releases and apply updates promptly once available. 2. Restrict access to the WordPress admin area and plugin management to trusted users only, employing strong authentication mechanisms such as MFA. 3. Review user roles and permissions to ensure that only necessary users have authenticated access, minimizing the number of accounts that could exploit this vulnerability. 4. Implement web application firewalls (WAF) with rules to detect and block suspicious requests targeting the plugin’s endpoints. 5. Conduct regular security audits and vulnerability scans focusing on WordPress plugins to identify and remediate similar issues proactively. 6. Consider temporarily disabling or removing the Smash Balloon Social Post Feed plugin if immediate patching is not possible and the risk is unacceptable. 7. Educate site administrators about the risks of privilege escalation and the importance of monitoring user activities for anomalies.