CVE-2025-46249: Simple Calendar For Elementor CSRF Flaw

CVE-2025-46249 Overview

CVE-2025-46249 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Simple Calendar for Elementor WordPress plugin developed by Michael (migaweb). The flaw exists in all plugin versions up to and including 1.6.4. An attacker can craft a malicious web page that, when visited by an authenticated WordPress user, performs unauthorized state-changing actions on the target site. The vulnerability is tracked under CWE-352 and requires user interaction to succeed. Successful exploitation can compromise the confidentiality, integrity, and availability of the affected WordPress instance.

Critical Impact
Attackers can trick authenticated WordPress administrators into executing unauthorized actions on the Simple Calendar for Elementor plugin, leading to full compromise of plugin configuration and potential broader site impact.

Affected Products

Migaweb Simple Calendar for Elementor (WordPress plugin) versions up to and including 1.6.4
WordPress sites running the vulnerable plugin alongside Elementor
All deployments where the plugin remains unpatched

Discovery Timeline

2025-04-22 - CVE-2025-46249 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-46249

Vulnerability Analysis

The Simple Calendar for Elementor plugin fails to validate the origin of state-changing HTTP requests. WordPress provides nonce tokens through the wp_nonce_field() and check_admin_referer() APIs to defend against CSRF attacks. The vulnerable plugin omits or improperly implements these nonce checks on one or more administrative endpoints. As a result, an attacker can forge requests that the victim's browser submits with valid session cookies.

The attack succeeds when a logged-in WordPress user with sufficient privileges visits an attacker-controlled page. The browser automatically attaches authentication cookies to the forged request. The plugin processes the request as if it originated from the legitimate administrator.

Root Cause

The root cause is missing or insufficient anti-CSRF token validation on plugin endpoints that perform sensitive operations. The plugin relies on session cookies for authentication without verifying request intent through a nonce. This violates the WordPress security model documented in the WordPress Plugin Handbook on Nonces.

Attack Vector

Exploitation requires the victim to be authenticated to the target WordPress site and to interact with attacker-controlled content. The attacker hosts a page containing a hidden form or JavaScript that submits a request to the vulnerable endpoint. When the victim loads the page, the request fires with the victim's session credentials. No prior privileges are required from the attacker, and the attack works across the network. Refer to the Patchstack WordPress Vulnerability Report for additional technical context.

Detection Methods for CVE-2025-46249

Indicators of Compromise

Unexpected modifications to Simple Calendar for Elementor plugin settings or calendar entries
WordPress access logs showing POST requests to plugin admin endpoints with external Referer headers
Administrator account activity originating from unusual IP addresses or user agents
New or modified calendar events that administrators do not recognize

Detection Strategies

Inspect HTTP access logs for requests to /wp-admin/admin.php or /wp-admin/admin-post.php that target Simple Calendar for Elementor actions and lack _wpnonce parameters
Compare the Referer header against the site's own domain for POST requests to plugin endpoints
Audit the WordPress activity log for plugin configuration changes outside scheduled maintenance windows
Use a Web Application Firewall (WAF) ruleset that flags cross-origin POST requests to WordPress admin paths

Monitoring Recommendations

Enable verbose logging in WordPress security plugins such as Wordfence or Sucuri to capture admin request metadata
Monitor outbound email notifications generated by the Simple Calendar plugin for changes the administrator did not initiate
Track the plugin version reported by site asset inventories and alert when 1.6.4 or earlier remains in production

How to Mitigate CVE-2025-46249

Immediate Actions Required

Update Simple Calendar for Elementor to a version later than 1.6.4 as soon as the vendor releases a patched release
If no fixed version is available, deactivate and remove the plugin from production WordPress sites
Force re-authentication for all administrator accounts and rotate WordPress salts in wp-config.php
Review recent calendar entries and plugin settings for unauthorized changes

Patch Information

At the time of publication, the Patchstack advisory lists all versions through 1.6.4 as affected. Site operators should monitor the WordPress plugin repository for an updated release that implements proper nonce verification on administrative actions.

Workarounds

Deploy a WAF rule that requires a same-origin Referer header on POST requests to WordPress admin endpoints
Restrict access to /wp-admin/ by IP allowlist using web server configuration
Train administrators to log out of WordPress sessions before browsing untrusted sites
Apply the principle of least privilege so that fewer accounts hold roles capable of triggering the vulnerable endpoints

bash

# Example nginx configuration to block cross-origin POSTs to wp-admin
location ^~ /wp-admin/ {
    if ($request_method = POST) {
        set $csrf_check "";
        if ($http_referer !~* "^https?://your-site\.example/") {
            set $csrf_check "block";
        }
        if ($csrf_check = "block") {
            return 403;
        }
    }
}