CVE-2025-47564 is a Missing Authorization vulnerability (CWE-862) identified in the ashanjay EventON plugin, affecting versions up to 4.9.9. This vulnerability arises due to improper or missing access control checks on certain functionalities within the EventON plugin, allowing unauthorized users to access features or perform actions that should be restricted. The vulnerability does not require authentication (PR:N) and can be exploited remotely over the network (AV:N) without user interaction (UI:N). The attack complexity is low (AC:L), meaning an attacker with minimal skill can exploit this flaw. Although the vulnerability does not impact confidentiality or integrity directly (C:N, I:N), it affects availability (A:L), potentially allowing attackers to disrupt service or functionality. EventON is a popular WordPress event calendar plugin used to manage and display events on websites. The missing authorization could allow attackers to manipulate event data or disrupt event-related services, potentially causing denial of service or unauthorized changes to event scheduling. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that mitigation may require vendor updates or manual access control hardening. The CVSS score of 5.3 classifies this as a medium severity vulnerability, primarily due to its ease of exploitation and impact on availability without compromising data confidentiality or integrity.

For European organizations using the EventON plugin, this vulnerability could lead to unauthorized access to event management functionalities, potentially disrupting event schedules or causing denial of service on public-facing websites. This could impact organizations relying on EventON for critical event communications, such as educational institutions, cultural organizations, and businesses hosting public or internal events. The disruption of event information availability could lead to reputational damage, loss of user trust, and operational inefficiencies. While no direct data breach risk is indicated, the availability impact could affect service continuity. Additionally, attackers might leverage this vulnerability as a foothold for further attacks if combined with other vulnerabilities or misconfigurations. Given the widespread use of WordPress and its plugins in Europe, the threat is relevant to a broad range of sectors, especially those with public-facing event management needs.

Organizations should immediately audit their use of the EventON plugin and restrict access to event management functionalities to trusted users only, implementing additional access control measures at the web server or application level if possible. Monitoring web server logs for unusual access patterns related to EventON endpoints can help detect exploitation attempts. Until an official patch is released, consider disabling or removing the EventON plugin if event functionality is not critical or can be temporarily managed through alternative means. For environments where EventON is essential, applying web application firewall (WAF) rules to restrict access to sensitive plugin functions or IP whitelisting can reduce exposure. Organizations should subscribe to vendor notifications and apply patches promptly once available. Additionally, regular backups of event data should be maintained to enable recovery in case of disruption.