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

CVE-2025-46249 Overview

CVE-2025-46249 is a Cross-Site Request Forgery (CSRF) vulnerability in the Migaweb Simple Calendar for Elementor WordPress plugin. The flaw affects all plugin versions up to and including 1.6.4. An attacker can craft a malicious web page that, when visited by an authenticated administrator, forces the victim's browser to submit unauthorized requests to the WordPress site. The issue is tracked under CWE-352: Cross-Site Request Forgery.

Critical Impact

Successful exploitation can lead to high-impact compromise of confidentiality, integrity, and availability on affected WordPress sites when an authenticated user is tricked into visiting an attacker-controlled page.

Affected Products

• Migaweb Simple Calendar for Elementor plugin versions through 1.6.4
• WordPress sites running the vulnerable plugin with administrators able to be social-engineered
• Any WordPress installation where the plugin is active and 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 exposes state-changing actions that do not properly verify the origin of incoming requests. The plugin fails to validate WordPress nonces or check request origin headers on sensitive endpoints. This allows an external site to forge HTTP requests on behalf of an authenticated user. According to the Patchstack advisory, the issue affects plugin versions up to 1.6.4.

Exploitation requires user interaction. An attacker must convince a logged-in WordPress user, typically an administrator, to click a link or load a page containing the malicious payload. Because browsers automatically attach session cookies, the forged request executes with the victim's privileges.

Root Cause

The root cause is missing or insufficient CSRF protection in plugin request handlers. WordPress provides the wp_nonce_field() and check_admin_referer() mechanisms to bind requests to a verified session token. The vulnerable handlers in Simple Calendar for Elementor do not consistently enforce these checks, leaving state-changing operations reachable through cross-origin requests.

Attack Vector

The attack vector is network-based with required user interaction. An attacker hosts a page containing a hidden form or JavaScript that auto-submits a request to the target WordPress site. When an authenticated user loads the page, the browser issues the request using the victim's authenticated session. The action then executes server-side as if the user initiated it. Detailed proof-of-concept information is documented in the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2025-46249

Indicators of Compromise

• Unexpected modifications to calendar plugin settings or content not initiated by site administrators
• WordPress access logs showing POST requests to plugin endpoints with Referer headers pointing to external domains
• Administrator session activity originating from unusual IP addresses or browsers immediately after clicking external links

Detection Strategies

• Audit WordPress activity logs for plugin configuration changes correlated with cross-origin Referer headers
• Review web server logs for requests to Simple Calendar for Elementor admin endpoints lacking valid nonce parameters
• Deploy a Web Application Firewall (WAF) rule that flags state-changing requests to the plugin without an _wpnonce token

Monitoring Recommendations

• Enable a WordPress audit logging plugin to record administrative actions and the originating user, IP, and referer
• Monitor outbound email and notification activity from the WordPress site for unauthorized content changes
• Track plugin version inventory across managed WordPress sites to identify hosts still running 1.6.4 or earlier

How to Mitigate CVE-2025-46249

Immediate Actions Required

• Update Simple Calendar for Elementor to a patched release later than 1.6.4 as published by the vendor
• Restrict administrator browsing sessions on the WordPress dashboard from being used to visit untrusted external sites
• Require administrators to log out of the WordPress admin interface when not actively performing site maintenance

Patch Information

Refer to the Patchstack WordPress Vulnerability Report for the fixed version and upgrade path. Apply the latest plugin update through the WordPress admin Plugins screen or via WP-CLI. Verify the installed version after the update completes.

Workarounds

• Deactivate the Simple Calendar for Elementor plugin until a patched version is installed
• Enforce a Web Application Firewall policy that rejects POST requests to plugin endpoints lacking a valid WordPress nonce
• Apply a SameSite=Strict or SameSite=Lax cookie policy for WordPress authentication cookies to limit cross-origin request risk

# Configuration example: disable the vulnerable plugin via WP-CLI until patched
wp plugin deactivate simple-calendar-for-elementor
wp plugin status simple-calendar-for-elementor