CVE-2025-62027 is a Missing Authorization vulnerability identified in the StellarWP Event Tickets WordPress plugin, affecting versions up to and including 5.26.3. This vulnerability arises from inadequate authorization checks within the plugin's code, allowing users with low privileges (PR:L) to perform actions that should be restricted. The attack vector is network-based (AV:N), requiring no user interaction (UI:N), and the scope remains unchanged (S:U). The vulnerability impacts confidentiality and integrity (C:L/I:L) but does not affect availability (A:N). Specifically, an attacker could exploit this flaw to access or modify event ticket data or related user information without proper permissions, potentially leading to unauthorized data disclosure or manipulation of event registrations. Although no public exploits have been reported yet, the presence of this vulnerability in a widely used event management plugin poses a significant risk. The CVSS v3.1 score of 5.4 reflects a medium severity level, indicating moderate impact and ease of exploitation given the low privileges required and lack of user interaction. The vulnerability was officially published on October 22, 2025, and was reserved earlier that month. No patches or exploit indicators are currently documented, highlighting the importance of monitoring vendor communications for updates. Organizations using this plugin should assess their exposure, especially if they rely heavily on event ticketing functionalities integrated into WordPress environments.

For European organizations, this vulnerability could lead to unauthorized access or modification of sensitive event-related data, including attendee information and ticketing details. This can result in privacy breaches, reputational damage, and potential regulatory non-compliance under GDPR due to unauthorized data exposure. Event organizers may face disruptions in ticket sales integrity, leading to financial losses or customer trust erosion. Since the plugin is commonly used in event management across various sectors, including cultural, corporate, and public events, the impact spans multiple industries. The lack of availability impact means services remain operational, but the integrity and confidentiality risks could facilitate further attacks or fraud. Organizations with multi-tenant WordPress environments or those integrating Event Tickets with other systems may experience broader security implications if attackers leverage this vulnerability as a foothold. The medium severity suggests that while the threat is not critical, timely remediation is essential to prevent exploitation, especially in high-profile or large-scale event scenarios common in Europe.

Organizations should immediately inventory their WordPress installations to identify the presence and version of the StellarWP Event Tickets plugin. Until an official patch is released, restrict access to the plugin’s administrative and API endpoints by implementing strict role-based access controls and IP whitelisting where feasible. Employ Web Application Firewalls (WAF) with custom rules to detect and block suspicious requests targeting Event Tickets functionalities. Monitor logs for unusual activity related to ticket management or unauthorized access attempts. Regularly update WordPress core and plugins to the latest versions once patches addressing CVE-2025-62027 become available. Additionally, conduct security awareness training for administrators to recognize potential exploitation signs. Consider isolating event management systems from other critical infrastructure to limit lateral movement in case of compromise. Engage with StellarWP support channels to receive timely updates and advisories. Finally, implement data encryption at rest and in transit for sensitive event data to mitigate confidentiality risks.