CVE-2026-2631: Datalogics WordPress Auth Bypass Flaw

CVE-2026-2631 Overview

The Datalogics Ecommerce Delivery WordPress plugin before version 2.6.60 contains a critical authentication bypass vulnerability that exposes an unauthenticated REST endpoint. This flaw allows any remote user to modify the datalogics_token option without verification. The token is subsequently used for authentication in a protected endpoint that enables users to perform arbitrary WordPress update_option() operations. Attackers can leverage this vulnerability to enable user registration and set the default role to Administrator, effectively achieving complete site takeover.

Critical Impact

Unauthenticated attackers can gain administrative access to WordPress sites by exploiting the insecure REST endpoint to manipulate authentication tokens and modify critical WordPress options.

Affected Products

• Datalogics Ecommerce Delivery WordPress plugin versions prior to 2.6.60

Discovery Timeline

• 2026-03-11 - CVE CVE-2026-2631 published to NVD
• 2026-03-11 - Last updated in NVD database

Technical Details for CVE-2026-2631

Vulnerability Analysis

This vulnerability is classified as CWE-269 (Improper Privilege Management) and represents a severe authorization bypass in the Datalogics Ecommerce Delivery WordPress plugin. The plugin implements a REST API endpoint that fails to properly authenticate incoming requests before allowing modification of security-critical configuration options.

The core issue stems from the plugin exposing an endpoint that accepts unauthenticated requests to update the datalogics_token value. This token serves as a gatekeeper for accessing a secondary protected endpoint that wraps WordPress's powerful update_option() function. By controlling this token, an attacker effectively bypasses all authentication controls on the privileged endpoint.

The impact is severe because WordPress's update_option() function can modify any option in the database, including security-critical settings such as users_can_register and default_role. An attacker can enable open registration and set new users to automatically become Administrators, resulting in complete site compromise.

Root Cause

The root cause of this vulnerability is the absence of authentication and authorization checks on the REST endpoint responsible for managing the datalogics_token option. The plugin developer failed to implement proper access controls, allowing any unauthenticated user to invoke the endpoint and overwrite the token value. This represents a fundamental security design flaw where trust is implicitly granted to all incoming API requests without proper verification of the caller's identity or permissions.

Attack Vector

The attack vector is network-based and requires no authentication, privileges, or user interaction. An attacker can exploit this vulnerability remotely by sending crafted HTTP requests to the vulnerable REST endpoint.

The attack proceeds in two stages:

1. The attacker sends an unauthenticated request to modify the datalogics_token to a value they control
2. Using the newly set token, the attacker authenticates to the protected endpoint and calls update_option() to enable user registration (users_can_register) and set the default role to administrator
3. The attacker registers a new account on the WordPress site, which automatically receives Administrator privileges
4. With administrative access, the attacker has full control over the WordPress installation

For detailed technical analysis, refer to the WPScan Vulnerability Advisory.

Detection Methods for CVE-2026-2631

Indicators of Compromise

• Unexpected modifications to the datalogics_token option in the WordPress database
• Unusual REST API requests to the Datalogics Ecommerce Delivery plugin endpoints from unknown IP addresses
• Changes to users_can_register or default_role options without administrative action
• Newly registered administrator accounts that were not created by legitimate site owners
• Evidence of update_option() calls in WordPress debug logs for sensitive settings

Detection Strategies

• Monitor WordPress REST API access logs for unauthenticated requests to Datalogics plugin endpoints
• Implement web application firewall (WAF) rules to detect and block suspicious option modification attempts
• Configure alerts for changes to critical WordPress options such as users_can_register and default_role
• Review WordPress user database for unauthorized administrator accounts
• Deploy SentinelOne Singularity XDR to detect and respond to post-exploitation activities

Monitoring Recommendations

• Enable verbose logging on the WordPress REST API to capture all endpoint access attempts
• Set up integrity monitoring for the wp_options database table to detect unauthorized changes
• Configure real-time alerting for new user registrations, especially those with elevated privileges
• Monitor network traffic for patterns consistent with automated exploitation attempts
• Review server access logs for high-frequency requests to plugin API endpoints

How to Mitigate CVE-2026-2631

Immediate Actions Required

• Update the Datalogics Ecommerce Delivery plugin to version 2.6.60 or later immediately
• Audit the WordPress wp_options table for unauthorized modifications to datalogics_token, users_can_register, and default_role
• Review all administrator accounts and remove any that were not legitimately created
• Reset the datalogics_token to a secure value after updating the plugin
• Consider temporarily disabling the plugin if immediate patching is not possible

Patch Information

The vulnerability has been addressed in Datalogics Ecommerce Delivery plugin version 2.6.60. Site administrators should update to this version or later through the WordPress plugin update mechanism or by downloading directly from the official source.

For additional details, see the WPScan Vulnerability Advisory.

Workarounds

• Restrict access to the WordPress REST API by implementing IP-based access controls at the web server or firewall level
• Disable the Datalogics Ecommerce Delivery plugin until a patched version can be deployed
• Implement a WAF rule to block unauthenticated requests to the vulnerable plugin endpoints
• Manually verify and lock down critical WordPress options by adding database-level constraints
• Consider using WordPress security plugins that can restrict REST API access to authenticated users only

# Configuration example - Restrict REST API access in .htaccess
# Add to WordPress .htaccess file to block unauthenticated REST API access to the plugin

<IfModule mod_rewrite.c>
RewriteEngine On
# Block unauthenticated access to Datalogics plugin REST endpoints
RewriteCond %{REQUEST_URI} ^/wp-json/datalogics/ [NC]
RewriteCond %{HTTP:Authorization} ^$
RewriteRule .* - [F,L]
</IfModule>