CVE-2026-23541 identifies a Missing Authorization vulnerability in the WPFunnels Mail Mint plugin, a WordPress extension designed to facilitate email marketing funnels. The vulnerability arises because certain functionalities within the plugin are not properly constrained by Access Control Lists (ACLs), meaning that users or attackers without the necessary permissions can access or invoke these functions. This lack of authorization checks can lead to unauthorized actions such as accessing sensitive data, modifying configurations, or triggering operations that should be restricted. The affected versions include all releases up to and including 1.19.4. The vulnerability was publicly disclosed in February 2026, with no CVSS score assigned yet and no known exploits reported in the wild. However, the nature of missing authorization vulnerabilities typically allows attackers to bypass security controls easily, especially in web applications like WordPress where plugins extend core functionality. Since Mail Mint is used for managing email marketing funnels, exploitation could compromise user data, email lists, or campaign configurations, potentially leading to data leakage or manipulation. The absence of patches at the time of disclosure necessitates immediate attention to access controls and monitoring. The vulnerability is particularly relevant for organizations relying on WordPress for marketing automation and customer engagement, as it undermines the integrity and confidentiality of their email marketing workflows.

For European organizations, exploitation of CVE-2026-23541 could result in unauthorized access to sensitive marketing data, including customer email lists and campaign details, leading to confidentiality breaches. Attackers might manipulate email funnel configurations, impacting the integrity of marketing operations and potentially causing reputational damage. The availability of the Mail Mint plugin functionality could also be disrupted if malicious actors trigger unintended operations. Given the widespread use of WordPress and related marketing plugins across Europe, especially in sectors like retail, finance, and media, the risk extends to a broad range of enterprises. Unauthorized access could facilitate phishing campaigns, data exfiltration, or lateral movement within compromised networks. The vulnerability's exploitation could also contravene GDPR requirements concerning data protection and access controls, exposing organizations to regulatory penalties. The lack of authentication barriers increases the likelihood of exploitation, making this a significant threat to European digital marketing infrastructures.

Organizations should immediately audit their WordPress installations to identify the use of the Mail Mint plugin and verify the version in use. Until an official patch is released, administrators should restrict access to the plugin’s administrative interfaces using web application firewalls (WAFs) or IP whitelisting to limit exposure. Review and tighten user roles and permissions within WordPress to ensure only trusted users have access to Mail Mint functionalities. Implement monitoring and alerting for unusual activities related to the plugin, such as unexpected configuration changes or access attempts. Consider temporarily disabling the plugin if it is not critical to operations. Stay informed about vendor updates and apply patches promptly once available. Additionally, conduct penetration testing focused on authorization controls within WordPress plugins to proactively identify similar weaknesses. Educate IT and security teams about the risks associated with missing authorization vulnerabilities to improve detection and response capabilities.