CVE-2025-66070 identifies a missing authorization vulnerability in the wpForo Forum plugin developed by Tomdever, affecting all versions up to and including 2.4.10. The vulnerability arises from incorrectly configured access control security levels, which fail to properly restrict user permissions. This misconfiguration can allow an attacker to perform unauthorized actions within the forum environment, such as modifying posts, changing user roles, or accessing restricted data. The flaw does not require known exploits in the wild yet, but the absence of authorization checks makes it a critical vector for privilege escalation or data manipulation. The vulnerability impacts the confidentiality and integrity of forum data and user information. Since wpForo is a popular WordPress forum plugin, the attack surface is broad, especially for websites relying on it for community interaction. The vulnerability does not have an assigned CVSS score, but the technical details indicate a significant risk due to the nature of missing authorization controls. The issue was reserved in November 2025 and published in December 2025, with no patch links currently available, emphasizing the need for vigilance and proactive mitigation.

For European organizations, this vulnerability can lead to unauthorized access to sensitive forum data, manipulation of user-generated content, and potential privilege escalation within the forum environment. This could damage organizational reputation, lead to data breaches involving user information, and disrupt community or customer support channels. Organizations using wpForo Forum for customer engagement or internal communication may face operational impacts if attackers exploit this flaw to alter or delete critical information. The risk extends to compliance concerns under GDPR if personal data is exposed or improperly accessed. The lack of authentication bypass could also facilitate further lateral movement within compromised networks if attackers leverage elevated privileges gained through the forum. Overall, the impact on confidentiality, integrity, and availability is significant, especially for entities with high reliance on the affected plugin.

Organizations should immediately inventory their WordPress installations to identify the use of wpForo Forum plugin versions up to 2.4.10. Until an official patch is released, administrators should restrict access to forum management interfaces to trusted personnel only and review user roles and permissions to minimize exposure. Implementing Web Application Firewalls (WAFs) with custom rules to detect and block suspicious forum-related requests can provide interim protection. Regularly monitoring forum logs for unusual activity or unauthorized changes is critical. Once a patch is available from Tomdever, prompt application is essential. Additionally, organizations should consider isolating the forum environment from critical internal systems to limit potential lateral movement. Conducting security audits focused on access control configurations within the forum plugin will help identify and remediate any other misconfigurations. Finally, educating forum administrators about secure configuration practices will reduce the risk of similar vulnerabilities.