CVE-2025-10742: Truelysell Core Auth Bypass Vulnerability

CVE-2025-10742 Overview

The Truelysell Core plugin for WordPress contains an Insecure Direct Object Reference (IDOR) vulnerability that enables arbitrary user password changes in versions up to and including 1.8.6. This critical flaw stems from the plugin providing user-controlled access to objects without proper authorization checks, allowing attackers to bypass authentication mechanisms and access system resources. Unauthenticated attackers can exploit this vulnerability to change user passwords and potentially take over administrator accounts, leading to complete site compromise.

Critical Impact

Unauthenticated attackers can change any user's password, including administrator accounts, potentially leading to complete WordPress site takeover. Exploitation requires knowledge of the page containing the truelysell_edit_staff shortcode.

Affected Products

• Truelysell Core Plugin for WordPress versions up to and including 1.8.6
• WordPress sites using the Truelysell Service Booking Theme
• Sites with pages containing the truelysell_edit_staff shortcode

Discovery Timeline

• 2025-10-16 - CVE-2025-10742 published to NVD
• 2025-10-16 - Last updated in NVD database

Technical Details for CVE-2025-10742

Vulnerability Analysis

This vulnerability is classified as CWE-639: Authorization Bypass Through User-Controlled Key. The Truelysell Core plugin fails to implement proper authorization checks when processing password change requests through the truelysell_edit_staff shortcode functionality. The plugin directly uses user-supplied input to identify which user account should have its password modified, without verifying that the requesting user has the authority to perform this action.

The attack surface requires the attacker to identify a page on the target WordPress site that contains the truelysell_edit_staff shortcode. Once located, the attacker can manipulate requests to change passwords for arbitrary user accounts, including administrators. This represents a complete breakdown of the authentication security model, as no prior authentication is required to exploit this vulnerability.

Root Cause

The root cause of this vulnerability lies in the absence of proper authorization validation within the password change functionality. The plugin accepts user-controlled identifiers (such as user IDs) and processes password modification requests without verifying the identity or permissions of the requester. This Insecure Direct Object Reference (IDOR) pattern allows any visitor to reference and modify user accounts they should not have access to, effectively bypassing the WordPress authentication and authorization framework.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker must first discover a page on the target WordPress site that implements the truelysell_edit_staff shortcode. This reconnaissance phase can be accomplished through site crawling, directory enumeration, or analyzing the site's page structure.

Once the vulnerable endpoint is identified, the attacker can craft malicious requests that specify the target user account (potentially by user ID or other identifier) along with a new password value. The plugin processes these requests without validating the requester's authorization, resulting in the target account's password being changed to the attacker-specified value. The attacker can then log in using the new credentials and gain full access to the compromised account.

Detection Methods for CVE-2025-10742

Indicators of Compromise

• Unexpected password reset activities or user complaints about being locked out of accounts
• Unusual HTTP POST requests to pages containing the truelysell_edit_staff shortcode from unauthenticated sources
• Multiple rapid password change attempts targeting different user accounts from single IP addresses
• Admin account lockouts or unauthorized configuration changes following unexplained password modifications

Detection Strategies

• Monitor WordPress authentication logs for successful logins following unexpected password changes
• Implement Web Application Firewall (WAF) rules to detect and alert on suspicious parameter manipulation in requests to staff editing endpoints
• Review access logs for enumeration patterns targeting pages with shortcode functionality
• Deploy file integrity monitoring to detect unauthorized changes to WordPress core, theme, or plugin files following potential compromise

Monitoring Recommendations

• Enable detailed logging for WordPress user management activities including password changes
• Configure alerts for administrator account password modifications that don't originate from expected administrative IP ranges
• Monitor for new administrator accounts or privilege escalation attempts that may follow initial compromise
• Implement real-time alerting for multiple failed authentication attempts followed by successful login with changed credentials

How to Mitigate CVE-2025-10742

Immediate Actions Required

• Update the Truelysell Core plugin to a patched version immediately if available from the vendor
• Temporarily disable the Truelysell Core plugin if no patch is available until a fix is released
• Remove or restrict access to pages containing the truelysell_edit_staff shortcode
• Reset passwords for all administrator accounts and verify no unauthorized accounts have been created
• Audit user account activity logs for signs of compromise

Patch Information

Site administrators should check for updates to the Truelysell Core plugin through the WordPress dashboard or via the ThemeForest marketplace where the theme and associated plugins are distributed. Additional vulnerability details and remediation guidance are available in the Wordfence Vulnerability Report. Contact the plugin vendor directly if no updated version is currently available.

Workarounds

• Restrict access to pages containing the truelysell_edit_staff shortcode using .htaccess rules or WordPress access control plugins
• Implement additional authentication layers such as HTTP Basic Auth or IP whitelisting for sensitive administrative pages
• Deploy a Web Application Firewall with rules to block unauthorized parameter manipulation attempts
• Consider temporarily replacing the vulnerable shortcode functionality with a custom implementation that includes proper authorization checks

# Apache .htaccess example to restrict access to vulnerable page
# Add to .htaccess in WordPress root directory
<IfModule mod_rewrite.c>
    RewriteEngine On
    # Block unauthenticated access to staff edit page (adjust path as needed)
    RewriteCond %{REQUEST_URI} /staff-edit-page/ [NC]
    RewriteCond %{HTTP_COOKIE} !wordpress_logged_in [NC]
    RewriteRule .* - [F,L]
</IfModule>