CVE-2025-62915 identifies a missing authorization vulnerability in the SMS Contact Form 7 Notifications plugin by ClickSend, specifically affecting versions up to 1.4.0. The vulnerability arises from incorrectly configured access control security levels, allowing attackers with low privileges to exploit the plugin’s notification functionality without proper authorization. This can lead to unauthorized sending of SMS messages through the plugin, potentially exposing sensitive information or enabling phishing and spam campaigns. The CVSS 3.1 score of 8.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) indicates that the vulnerability can be exploited remotely over the network with low attack complexity and requires only low privileges, without any user interaction. The impact primarily affects confidentiality and integrity, as attackers can send unauthorized messages or extract sensitive data via SMS notifications, but it does not affect system availability. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the widespread use of WordPress and the popularity of Contact Form 7 and ClickSend integrations for SMS notifications. The lack of a patch link suggests that a fix may not yet be available, emphasizing the need for immediate mitigation measures. The vulnerability was reserved and published in late October 2025, highlighting its recent discovery and disclosure.

For European organizations, this vulnerability can lead to unauthorized disclosure of sensitive information via SMS, undermining confidentiality. Attackers could send fraudulent or malicious SMS messages, damaging organizational reputation and potentially facilitating social engineering or phishing attacks targeting employees or customers. Integrity is compromised as attackers can manipulate notification content or trigger unauthorized messages, potentially disrupting communication workflows. Although availability is not impacted, the misuse of SMS notifications can cause operational confusion and loss of trust in automated communication systems. Organizations relying on SMS for critical alerts, multi-factor authentication, or customer communications are particularly at risk. The breach of confidentiality may also lead to regulatory non-compliance under GDPR, resulting in legal and financial penalties. The absence of known exploits in the wild provides a window for proactive defense, but the high CVSS score underscores the urgency of addressing this vulnerability to prevent exploitation.

1. Monitor official ClickSend and WordPress plugin repositories for updates and apply patches immediately once available. 2. Restrict access to the SMS Contact Form 7 Notifications plugin endpoints using web application firewalls (WAFs) or IP whitelisting to limit exposure to authorized users only. 3. Implement strict role-based access controls within WordPress to ensure only trusted users have permissions to configure or trigger SMS notifications. 4. Audit and review SMS notification logs regularly to detect unusual or unauthorized message activity. 5. Temporarily disable the plugin if patching is not immediately possible and SMS notifications are not critical. 6. Educate staff about potential phishing or social engineering risks stemming from unauthorized SMS messages. 7. Employ network segmentation to isolate systems handling SMS notifications from broader corporate networks. 8. Consider alternative secure notification methods until the vulnerability is resolved. 9. Conduct penetration testing focused on access control weaknesses in the plugin environment. 10. Maintain up-to-date backups and incident response plans tailored to communication system compromises.