CVE-2025-46249 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Michael Simple calendar plugin for Elementor, affecting all versions up to and including 1.6.4. This vulnerability arises due to insufficient verification of the origin of requests made to the plugin, allowing an attacker to trick an authenticated user into submitting unwanted actions on the vulnerable web application. Specifically, if a user with appropriate privileges (such as an administrator or editor) visits a maliciously crafted webpage while logged into a site using the Simple calendar plugin, the attacker can cause the victim's browser to perform unauthorized actions on the site without their consent. These actions could include modifying calendar entries, changing settings, or other administrative tasks exposed by the plugin's interface. The vulnerability is categorized under CWE-352, which highlights the lack of anti-CSRF tokens or other protective mechanisms to validate the legitimacy of requests. No known public exploits have been reported yet, and no patches have been released at the time of this analysis. The vulnerability was published on April 22, 2025, and has been enriched by CISA, indicating recognition by authoritative cybersecurity entities. The affected product is a popular calendar plugin integrated with Elementor, a widely used WordPress page builder, which increases the potential attack surface due to the plugin's deployment in numerous WordPress sites worldwide.

For European organizations, the exploitation of this CSRF vulnerability could lead to unauthorized modifications of website content or administrative settings, potentially disrupting business operations or damaging reputation. Since the plugin is used within WordPress environments, which are common among SMEs and larger enterprises for content management, the risk includes defacement, misinformation, or manipulation of event data that could affect customer engagement or internal scheduling. Additionally, if the compromised site is part of a larger digital infrastructure, attackers might leverage this foothold for further attacks such as privilege escalation or lateral movement. The impact on confidentiality is moderate as CSRF primarily targets integrity and availability by forcing unwanted actions rather than directly exfiltrating data. However, the integrity of web content and availability of calendar functionalities could be significantly affected. Given that exploitation requires the victim to be authenticated and visit a malicious site, the attack vector is somewhat constrained but remains feasible, especially in environments with high user interaction and external web access.

European organizations should implement the following specific mitigations: 1) Immediately audit all WordPress sites using the Michael Simple calendar plugin and identify versions up to 1.6.4. 2) Apply strict Content Security Policy (CSP) headers to restrict the domains from which scripts can be loaded, reducing the risk of malicious cross-site requests. 3) Employ web application firewalls (WAFs) with custom rules to detect and block suspicious POST requests that lack valid anti-CSRF tokens or originate from untrusted referrers. 4) Enforce user session management best practices, such as short session timeouts and re-authentication for sensitive actions, to limit the window of opportunity for CSRF attacks. 5) Educate users, especially administrators, about the risks of clicking on unknown links while logged into critical systems. 6) Monitor web server logs for unusual activity patterns indicative of CSRF exploitation attempts. 7) Coordinate with the plugin vendor or community to track patch releases and apply updates promptly once available. 8) Consider temporarily disabling or replacing the plugin if critical operations depend on it and no patch is available.