CVE-2025-31689 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability affecting the Drupal General Data Protection Regulation (GDPR) module versions prior to 3.0.1 and between 3.1.0 and before 3.1.2. CSRF vulnerabilities allow an attacker to trick an authenticated user into submitting a forged request to a web application, potentially causing unintended actions without the user's consent. In this case, the vulnerability impacts the GDPR module, which is responsible for managing compliance with the European Union's GDPR requirements within Drupal-based websites. The CVSS 3.1 score of 8.1 reflects a high severity, with the vector indicating that the attack can be executed remotely over the network (AV:N) with low attack complexity (AC:L), requires no privileges (PR:N), but does require user interaction (UI:R). The impact is significant on integrity and availability (I:H/A:H), meaning that an attacker could manipulate or disrupt GDPR-related data or processes, potentially leading to data integrity issues or denial of service conditions. Confidentiality is not directly impacted (C:N). The vulnerability does not require authentication, increasing the risk profile, but does require the victim to interact with a malicious link or webpage. No known exploits are currently reported in the wild, and no patches are linked in the provided data, though it is implied that versions 3.0.1 and 3.1.2 and later have addressed the issue. Given the GDPR module's role in managing sensitive personal data compliance, exploitation could undermine trust and regulatory adherence for affected organizations.

For European organizations, this vulnerability poses a significant risk due to the critical role of GDPR compliance in their operations. Exploitation could allow attackers to perform unauthorized actions related to GDPR data processing or management, potentially altering or disrupting consent records, data access requests, or data erasure processes. This could lead to non-compliance with GDPR regulations, resulting in legal penalties, reputational damage, and loss of customer trust. Additionally, disruption of GDPR-related workflows could impact operational continuity. Since Drupal is widely used by public sector entities, educational institutions, and private enterprises across Europe, the scope of impact is broad. The requirement for user interaction means targeted phishing or social engineering campaigns could be used to exploit this vulnerability. The lack of confidentiality impact reduces the risk of direct data leakage, but the high integrity and availability impact means data manipulation or service disruption is a serious concern.

Organizations should immediately verify the version of the Drupal GDPR module in use and upgrade to version 3.0.1, 3.1.2, or later where the vulnerability is patched. If immediate upgrading is not feasible, implement additional CSRF protections such as enforcing strict SameSite cookie attributes, deploying web application firewalls (WAFs) with rules to detect and block CSRF attack patterns, and employing Content Security Policy (CSP) headers to restrict malicious script execution. User awareness training to recognize phishing attempts can reduce the risk of successful exploitation requiring user interaction. Additionally, audit and monitor GDPR-related workflows and logs for unusual activity that could indicate exploitation attempts. Regular security assessments and penetration testing focusing on CSRF vectors in Drupal modules are recommended to proactively identify and remediate weaknesses.