CVE-2025-62915 identifies a missing authorization vulnerability in the SMS Contact Form 7 Notifications plugin by ClickSend, specifically affecting versions up to and including 1.4.0. The vulnerability arises from incorrectly configured access control security levels, which fail to properly verify whether a user or request is authorized to perform certain actions within the plugin. This misconfiguration can allow an attacker to bypass authorization checks and potentially trigger SMS notifications without permission. The plugin integrates with Contact Form 7, a widely used WordPress form plugin, to send SMS alerts based on form submissions. Exploiting this vulnerability could enable unauthorized users to send SMS messages, which might be used for spamming, phishing, or leaking sensitive information. While no exploits have been reported in the wild yet, the nature of the vulnerability suggests a significant risk if weaponized. The vulnerability was reserved and published in late October 2025, but no CVSS score or patch links are currently available, indicating that remediation may still be pending. The lack of authentication or authorization enforcement in this plugin component highlights a critical security oversight that could impact the confidentiality and integrity of communications handled via the plugin.

For European organizations, the impact of this vulnerability could be substantial, particularly for those relying on WordPress and Contact Form 7 with the ClickSend SMS integration for customer engagement, alerts, or transactional messaging. Unauthorized SMS sending could lead to reputational damage, customer trust erosion, and potential regulatory issues under GDPR if personal data is exposed or misused. Attackers might exploit the vulnerability to send fraudulent messages, conduct phishing campaigns, or cause denial of service through SMS flooding. The integrity of communication channels would be compromised, and organizations could incur financial costs related to SMS fees and incident response. Additionally, misuse of the plugin could facilitate broader attacks by leveraging SMS as a vector for social engineering or multi-factor authentication bypass attempts. The absence of a patch increases the window of exposure, necessitating immediate compensating controls to reduce risk.

1. Monitor official ClickSend and WordPress plugin repositories for updates and apply patches immediately once available. 2. Until patched, restrict access to the plugin’s endpoints using web application firewalls (WAFs) or server-level access controls to limit requests to trusted users or IP addresses. 3. Audit and review WordPress user roles and permissions to ensure minimal necessary access is granted, reducing the risk of internal misuse. 4. Implement logging and alerting on SMS notification activities to detect anomalous or unauthorized message sending. 5. Consider temporarily disabling the SMS Contact Form 7 Notifications plugin if SMS functionality is not critical or can be substituted with alternative secure methods. 6. Educate staff about potential phishing or social engineering attacks that could leverage unauthorized SMS messages. 7. Conduct regular security assessments of WordPress plugins and configurations to identify and remediate similar access control issues proactively.