CVE-2026-95527: Conekta Payment Gateway Auth Bypass Flaw

CVE-2026-95527 Overview

CVE-2026-95527 is a broken access control vulnerability affecting the Conekta Payment Gateway plugin for WordPress in versions up to and including 6.2.4. The flaw allows unauthenticated attackers to reach protected functionality that should require authorization checks. The weakness is classified under CWE-862: Missing Authorization. Because the plugin processes payment-related workflows, exposed endpoints can be reached over the network without user interaction or credentials.

Critical Impact
Unauthenticated attackers can invoke plugin functions that lack proper authorization checks, resulting in limited integrity and availability impact on affected WordPress sites running the Conekta Payment Gateway plugin.

Affected Products

Conekta Payment Gateway plugin for WordPress, versions <= 6.2.4

Discovery Timeline

2026-09-23 - CVE-2026-95527 published to NVD
2026-09-23 - Last updated in NVD database

Technical Details for CVE-2026-95527

Vulnerability Analysis

The vulnerability stems from missing authorization checks within the Conekta Payment Gateway plugin. One or more endpoints or plugin actions execute their intended logic without validating whether the caller has the necessary privileges. Attackers reach these paths over the network without prior authentication or user interaction.

The issue maps to CWE-862 Missing Authorization. This class of flaw typically appears in WordPress plugins when wp_ajax_nopriv_* hooks, REST API routes, or admin-post handlers are registered without current_user_can() capability checks or nonce validation. The result is unauthenticated access to functionality intended for privileged roles.

The attack surface is limited to sites running the plugin at version 6.2.4 or earlier. Because the plugin ties into WooCommerce payment workflows, the exposed functions may relate to order handling, payment status callbacks, or configuration reads.

Root Cause

The root cause is the absence of proper authorization enforcement on one or more plugin request handlers. When a plugin registers a callback but omits capability or nonce verification, WordPress dispatches the request regardless of the caller's identity. Attackers exploit this gap by issuing crafted HTTP requests directly to the vulnerable endpoints.

Attack Vector

An unauthenticated remote attacker sends HTTP requests to the WordPress site hosting the vulnerable plugin. No credentials, tokens, or victim interaction are required. Refer to the Patchstack Security Vulnerability Report for advisory details.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-95527

Indicators of Compromise

Unauthenticated HTTP POST or GET requests to plugin-specific endpoints such as /wp-admin/admin-ajax.php with action parameters referencing conekta.
REST API calls to routes registered under a conekta-related namespace originating from unknown IP addresses.
Unexpected changes to WooCommerce order state, payment configuration, or plugin settings absent a corresponding admin login.

Detection Strategies

Inventory all WordPress sites and identify installations of Conekta Payment Gateway at version 6.2.4 or earlier.
Review web server access logs for anomalous request patterns targeting plugin endpoints without authenticated session cookies.
Correlate WordPress audit logs against firewall telemetry to identify request bursts from single sources probing plugin actions.

Monitoring Recommendations

Enable verbose access logging on the WordPress front controller and forward logs to a centralized analytics platform for retention and searchability.
Alert on repeated admin-ajax.php requests referencing the plugin action name from unauthenticated sources.
Track plugin version drift across sites and flag installations that remain on unpatched versions.

How to Mitigate CVE-2026-95527

Immediate Actions Required

Identify WordPress installations running Conekta Payment Gateway <= 6.2.4 and prioritize them for update.
Restrict administrative and plugin endpoints behind a web application firewall (WAF) with virtual patching for the advisory.
Review recent orders and plugin configuration changes for signs of unauthorized modification.

Patch Information

Consult the Patchstack Security Vulnerability Report for the fixed version and vendor guidance. Apply the vendor-supplied update as soon as it is validated in a staging environment.

Workarounds

Disable the Conekta Payment Gateway plugin until an updated version is applied if payment processing can be temporarily suspended.
Apply WAF rules that block unauthenticated requests to the plugin's AJAX and REST endpoints.
Enforce IP allow-listing on /wp-admin/ and administrative endpoints where operationally feasible.

bash

# Configuration example: block unauthenticated access to plugin AJAX action at the web server layer
# Example nginx rule - adjust action name to match the vulnerable handler
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^conekta_") {
        return 403;
    }
}