CVE-2025-58243 identifies a missing authorization vulnerability in the Jthemes imEvent plugin, affecting all versions up to and including 3.4.0. The flaw arises because certain functionalities within the imEvent plugin are not properly constrained by Access Control Lists (ACLs), allowing unauthenticated remote attackers to invoke these functions without proper permission checks. This means that an attacker can access features or data that should be restricted, potentially leading to unauthorized information disclosure or manipulation of event-related data. The vulnerability is remotely exploitable over the network without requiring any user interaction or authentication, increasing its risk profile. However, the impact on confidentiality is limited (low confidentiality impact), and there is no impact on integrity or availability, as indicated by the CVSS vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). No known exploits have been reported in the wild, and no official patches have been released at the time of publication. The vulnerability was reserved in August 2025 and published in November 2025. Organizations using imEvent for event management should be aware of this issue as it could allow unauthorized access to event functionalities or data, potentially undermining operational security and privacy.

For European organizations, the primary impact of CVE-2025-58243 is unauthorized access to event management functionalities within the imEvent plugin, which could lead to limited disclosure of sensitive event information. While the confidentiality impact is low, unauthorized access could still result in privacy violations or leakage of attendee or event details, which may conflict with GDPR requirements. The lack of integrity and availability impact means the threat does not directly enable data tampering or service disruption. However, unauthorized access could facilitate further reconnaissance or social engineering attacks. Organizations relying heavily on imEvent for managing conferences, seminars, or public events may face reputational risks if sensitive event data is exposed. Since exploitation requires no authentication or user interaction, the risk of automated scanning and exploitation attempts exists, especially if the plugin is exposed to the internet. The absence of patches increases the window of exposure, emphasizing the need for interim controls.

1. Immediately restrict external network access to the imEvent plugin interface by implementing firewall rules or network segmentation to limit exposure. 2. Monitor web server and application logs for unusual or unauthorized access attempts targeting imEvent functionalities. 3. Apply strict web application firewall (WAF) rules to detect and block suspicious requests that attempt to invoke unauthorized functions. 4. Engage with Jthemes support channels to obtain information on forthcoming patches or security updates and prioritize patch deployment once available. 5. Conduct an internal audit of event data accessible via imEvent to identify and secure sensitive information. 6. Consider temporary disabling or uninstalling the imEvent plugin if feasible until a patch is released. 7. Educate IT and security teams about this vulnerability to enhance detection and response capabilities. 8. Implement multi-factor authentication and least privilege principles on the hosting environment to reduce lateral movement if exploitation occurs.