The vulnerability identified as CVE-2025-11740 affects the wpForo Forum plugin for WordPress, specifically versions up to and including 2.4.9. This flaw arises from improper neutralization of special elements in SQL commands (CWE-89), enabling SQL Injection attacks through the Subscriptions Manager component. The root cause is insufficient escaping of user-supplied input and the absence of prepared statements in the SQL queries handling subscription data. Authenticated attackers with Subscriber-level privileges or higher can exploit this vulnerability by appending arbitrary SQL code to existing queries. This can lead to unauthorized extraction of sensitive information from the underlying database, such as user data or configuration details. The vulnerability does not allow modification or deletion of data (no integrity or availability impact) but compromises confidentiality. The attack vector is network-based and does not require user interaction beyond authentication. The CVSS v3.1 base score is 6.5, reflecting medium severity due to the need for authentication and the limited scope of impact. No public exploits or patches have been reported at the time of disclosure, highlighting the importance of proactive mitigation. The vulnerability was reserved on October 14, 2025, and published on November 1, 2025, by Wordfence.

This vulnerability poses a significant risk to organizations using the wpForo Forum plugin on WordPress sites, especially those that allow Subscriber-level users to register or participate. Successful exploitation can lead to unauthorized disclosure of sensitive database contents, including potentially personal user information, forum data, or configuration settings. While the vulnerability does not permit data modification or service disruption, the confidentiality breach can facilitate further attacks such as credential theft, targeted phishing, or privilege escalation. Organizations relying on wpForo for community engagement, customer support, or internal collaboration may face reputational damage and regulatory compliance issues if sensitive data is exposed. The requirement for authenticated access reduces the attack surface but does not eliminate risk, as subscriber accounts are commonly available on many forums. The absence of known exploits in the wild currently limits immediate widespread impact, but the medium severity score and ease of exploitation once authenticated necessitate prompt attention.

To mitigate this vulnerability, organizations should immediately restrict Subscriber-level permissions to the minimum necessary, limiting access to the Subscriptions Manager functionality where possible. Monitoring and auditing user activities for suspicious behavior can help detect exploitation attempts. Administrators should follow vendor communications closely and apply security patches or plugin updates as soon as they become available. In the interim, consider disabling or restricting the wpForo Subscriptions Manager feature if feasible. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL Injection patterns targeting the plugin’s endpoints. Additionally, implement strong authentication controls and encourage the use of multi-factor authentication to reduce the risk of compromised subscriber accounts. Regular database backups and secure storage of sensitive data will aid recovery if an incident occurs. Finally, developers maintaining custom integrations with wpForo should review their code for similar injection risks and adopt parameterized queries and input validation best practices.