CVE-2025-62123 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the Ink themes WP Gmail SMTP WordPress plugin, affecting all versions up to 1.0.7. CSRF vulnerabilities occur when a web application does not adequately verify that requests modifying state originate from legitimate users, allowing attackers to craft malicious requests that execute actions on behalf of authenticated users without their consent. In this case, the WP Gmail SMTP plugin lacks proper CSRF protections on certain state-changing endpoints, enabling attackers to induce logged-in users, particularly administrators, to unknowingly perform actions such as changing SMTP settings or email configurations. The CVSS 3.1 base score of 4.3 reflects that the attack vector is network-based, requires no privileges, but does require user interaction (e.g., clicking a malicious link). The impact is limited to integrity, as attackers cannot directly access or exfiltrate data, nor cause denial of service. No patches or fixes are currently linked, and no active exploits have been reported. The vulnerability was reserved in October 2025 and published at the end of 2025, indicating a recent discovery. Given the plugin’s role in managing email delivery via Gmail SMTP, unauthorized changes could disrupt email functionality or redirect emails, potentially facilitating phishing or spam campaigns if exploited.

For European organizations, this vulnerability poses a moderate risk primarily to the integrity of email configuration within WordPress sites using the Ink themes WP Gmail SMTP plugin. Successful exploitation could allow attackers to alter SMTP settings, potentially redirecting outgoing emails or disabling legitimate email delivery. This could lead to operational disruptions, loss of trust in email communications, or facilitate further social engineering attacks. Organizations relying on WordPress for public-facing websites or internal portals that use this plugin are at risk. While confidentiality and availability impacts are minimal, the integrity compromise could indirectly affect business processes and communications. The threat is more pronounced in sectors with high reliance on email notifications, such as e-commerce, finance, and government services. The absence of known exploits reduces immediate risk, but the vulnerability should be addressed proactively to prevent future exploitation.

Immediate mitigation steps include restricting administrative access to the WordPress backend to trusted personnel and enforcing multi-factor authentication to reduce the risk of session hijacking. Administrators should monitor and audit SMTP configuration changes for unauthorized modifications. Since no official patch is currently available, applying Web Application Firewall (WAF) rules to detect and block suspicious CSRF attempts targeting the plugin’s endpoints can provide temporary protection. Website owners should implement or verify the presence of anti-CSRF tokens in all forms and state-changing requests related to the plugin. Additionally, updating the plugin promptly once a patch is released is critical. Regular backups of WordPress configurations and databases will aid in recovery if unauthorized changes occur. Educating users about the risks of clicking unsolicited links while authenticated on administrative portals can reduce the likelihood of successful CSRF attacks.