CVE-2026-49066: Conekta Payment Gateway Data Exposure Flaw

CVE-2026-49066 Overview

CVE-2026-49066 is an unauthenticated sensitive data exposure vulnerability affecting the Conekta Payment Gateway plugin for WordPress in versions up to and including 6.0.0. The flaw allows remote attackers to retrieve sensitive information without supplying credentials or interacting with a user. The weakness is classified under CWE-497, which covers exposure of sensitive system information to an unauthorized control sphere. Sites running e-commerce checkout flows powered by Conekta are most at risk, since exposed data can include payment-related configuration values.

Critical Impact
An unauthenticated attacker can disclose sensitive plugin data over the network without user interaction, undermining confidentiality of payment integration details.

Affected Products

Conekta Payment Gateway WordPress plugin versions <= 6.0.0
WordPress sites with the Conekta Payment Gateway plugin enabled
E-commerce deployments using Conekta for checkout processing on vulnerable plugin versions

Discovery Timeline

2026-06-15 - CVE-2026-49066 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2026-49066

Vulnerability Analysis

The vulnerability allows unauthenticated remote actors to access sensitive data exposed by the Conekta Payment Gateway plugin. The attack requires no privileges and no user interaction, and it is reachable over the network. The flaw impacts confidentiality only — integrity and availability of the WordPress host are not directly affected. According to the Patchstack Vulnerability Report, the issue impacts every release through 6.0.0. Sensitive data exposure in payment plugins typically reveals API keys, merchant identifiers, or internal configuration values that can be reused in follow-on attacks against the payment processor account.

Root Cause

The root cause is mapped to [CWE-497]: exposure of sensitive system information through a publicly reachable resource. The plugin returns or stores sensitive information in a location that is accessible without authentication checks. Patchstack's advisory tracks this as a sensitive data exposure flaw rather than an authentication or injection bug.

Attack Vector

The attack vector is network-based and unauthenticated. An attacker sends crafted HTTP requests to the vulnerable WordPress endpoint that the plugin registers. Because no credentials or session context are required, the vulnerability is suitable for automated mass-scanning against WordPress sites running Conekta. The vulnerability affects confidentiality only, so successful exploitation does not modify site content or disrupt availability.

No verified proof-of-concept code is published in the referenced advisory. Refer to the Patchstack Vulnerability Report for vendor-tracked technical detail.

Detection Methods for CVE-2026-49066

Indicators of Compromise

Unauthenticated HTTP GET or POST requests to Conekta Payment Gateway plugin endpoints under /wp-content/plugins/conekta-payment-gateway/ or related REST routes.
Outbound responses from the WordPress site containing API keys, merchant IDs, or other Conekta configuration values.
High request volume from a single source enumerating plugin files or admin-ajax actions associated with Conekta.

Detection Strategies

Inventory all WordPress sites and identify any running Conekta Payment Gateway plugin at version <= 6.0.0.
Inspect web server access logs for anomalous unauthenticated requests targeting plugin paths and AJAX actions.
Review WordPress audit logs and WAF telemetry for repeated requests to plugin endpoints that return non-empty payloads to unauthenticated callers.

Monitoring Recommendations

Alert on any external requests that return responses containing strings such as key_, conekta, or other payment provider identifiers.
Monitor for unusual access patterns to /wp-json/ routes registered by the Conekta plugin.
Rotate and monitor Conekta API keys for unexpected usage that may indicate prior data theft.

How to Mitigate CVE-2026-49066

Immediate Actions Required

Update the Conekta Payment Gateway plugin to a version newer than 6.0.0 as soon as the vendor releases a fixed build.
Rotate Conekta API keys, webhook secrets, and any other credentials managed by the plugin if exposure is suspected.
Restrict access to WordPress administrative and plugin endpoints behind a web application firewall while patching is pending.

Patch Information

No fixed version is listed in the referenced Patchstack Vulnerability Report at time of publication. Administrators should monitor the WordPress plugin repository and the Patchstack advisory page for an updated release beyond version 6.0.0 and apply it promptly.

Workarounds

Disable the Conekta Payment Gateway plugin until a patched version is available if a temporary processor switch is feasible.
Block unauthenticated access to plugin endpoints at the WAF or reverse proxy layer.
Restrict outbound exposure by relocating sensitive configuration values out of plugin-readable locations where supported.

bash

# Example WAF rule concept (adapt to your platform)
# Deny unauthenticated requests to Conekta plugin paths
location ~* /wp-content/plugins/conekta-payment-gateway/ {
    deny all;
    return 403;
}