CVE-2026-2324: LatePoint WordPress Plugin CSRF Vulnerability

CVE-2026-2324 Overview

The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Cross-Site Request Forgery (CSRF) in all versions up to, and including, 5.2.7. This vulnerability exists due to missing or incorrect nonce validation on the reload_preview() function. This flaw allows unauthenticated attackers to update settings and inject malicious web scripts via a forged request, provided they can trick a site administrator into performing an action such as clicking on a malicious link.

Critical Impact

Attackers can manipulate WordPress site settings and inject malicious JavaScript code without authentication by exploiting the CSRF vulnerability in the booking plugin's preview reload functionality.

Affected Products

• LatePoint – Calendar Booking Plugin for Appointments and Events versions up to and including 5.2.7
• WordPress installations using the vulnerable LatePoint plugin
• Websites with administrative users who may be susceptible to social engineering attacks

Discovery Timeline

• 2026-03-11 - CVE CVE-2026-2324 published to NVD
• 2026-03-11 - Last updated in NVD database

Technical Details for CVE-2026-2324

Vulnerability Analysis

This Cross-Site Request Forgery (CSRF) vulnerability in the LatePoint WordPress plugin stems from improper security controls in the reload_preview() function. The function fails to properly verify that incoming requests originate from legitimate, authenticated administrative sessions. WordPress provides a nonce (number used once) mechanism specifically designed to protect against CSRF attacks, but this implementation either lacks nonce validation entirely or implements it incorrectly.

The vulnerability has a changed scope, meaning successful exploitation can affect resources beyond the vulnerable component's security scope. While confidentiality and integrity impacts are limited, the ability to modify settings and inject scripts creates significant risk for WordPress sites using this booking plugin.

Root Cause

The root cause of this vulnerability is the missing or incorrect nonce validation in the reload_preview() function (CWE-352: Cross-Site Request Forgery). WordPress security best practices require all state-changing AJAX handlers and form processors to verify nonces using functions like wp_verify_nonce() or check_ajax_referer(). The LatePoint plugin failed to implement these safeguards properly, allowing attackers to craft forged requests that the server processes as if they were legitimate administrative actions.

Attack Vector

The attack requires network access and user interaction. An attacker must craft a malicious webpage or link containing a forged request targeting the vulnerable reload_preview() function. When an authenticated WordPress administrator visits the attacker's page or clicks the malicious link while logged into their WordPress dashboard, the forged request executes with the administrator's privileges.

The attack chain typically involves:

1. Attacker identifies a WordPress site using the vulnerable LatePoint plugin
2. Attacker crafts a malicious page containing a hidden form or JavaScript that sends a forged POST request
3. Attacker uses social engineering to trick a logged-in administrator into visiting the malicious page
4. The administrator's browser automatically includes session cookies with the forged request
5. The WordPress site processes the request as legitimate, allowing settings modification and script injection

Since no verified code examples are available, readers should refer to the WordPress Plugin Changeset for technical implementation details of the vulnerability and its fix.

Detection Methods for CVE-2026-2324

Indicators of Compromise

• Unexpected modifications to LatePoint plugin settings without administrator action
• Injected JavaScript code appearing in booking forms or preview pages
• Suspicious administrator activity logs showing settings changes without corresponding dashboard access
• Reports of unusual behavior from site visitors using booking features

Detection Strategies

• Review WordPress audit logs for unauthorized settings changes to the LatePoint plugin
• Implement Content Security Policy (CSP) headers to detect and block unauthorized script injections
• Monitor for anomalous HTTP POST requests targeting LatePoint AJAX handlers from external referrers
• Scan plugin output for unexpected or malicious JavaScript content

Monitoring Recommendations

• Enable WordPress security plugins that log all plugin settings modifications
• Configure web application firewall (WAF) rules to detect CSRF attack patterns
• Set up alerts for administrative actions performed without corresponding dashboard login events
• Regularly audit LatePoint plugin configuration for unauthorized changes

How to Mitigate CVE-2026-2324

Immediate Actions Required

• Update the LatePoint plugin to a version newer than 5.2.7 that includes the security fix
• Review recent plugin settings changes and verify they were authorized
• Inspect booking forms and preview functionality for injected malicious scripts
• Educate WordPress administrators about phishing and social engineering risks

Patch Information

The vulnerability has been addressed in a newer release of the LatePoint plugin. The security fix implements proper nonce validation in the reload_preview() function to prevent CSRF attacks. Detailed information about the patch can be found in the WordPress Plugin Changeset. Additional vulnerability analysis is available through the Wordfence Vulnerability Report.

Workarounds

• Implement a Web Application Firewall (WAF) with CSRF protection rules while awaiting plugin updates
• Restrict administrative access to trusted IP addresses only
• Use browser extensions or security policies that block cross-origin requests to WordPress admin endpoints
• Ensure administrators log out of WordPress when not actively managing the site

# Example: Restrict WordPress admin access by IP in .htaccess
<Files wp-login.php>
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.100
</Files>

# Block external POST requests to admin-ajax.php
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_METHOD} POST
    RewriteCond %{HTTP_REFERER} !^https?://(www\.)?yourdomain\.com [NC]
    RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php [NC]
    RewriteRule .* - [F,L]
</IfModule>