CVE-2026-66585: WP Cafe Pro Information Disclosure Flaw

CVE-2026-66585 Overview

CVE-2026-66585 is an unauthenticated sensitive data exposure vulnerability in the WP Cafe Pro WordPress plugin. The flaw affects all versions prior to 3.0.15 and allows remote attackers to retrieve confidential information without authentication or user interaction. The issue is categorized under CWE-201 (Insertion of Sensitive Information Into Sent Data).

Critical Impact
Remote, unauthenticated attackers can access sensitive data exposed by the WP Cafe Pro plugin over the network, potentially leaking restaurant, customer, or configuration information stored by the plugin.

Affected Products

WP Cafe Pro WordPress plugin versions prior to 3.0.15
WordPress sites running the WP Cafe Pro restaurant/reservation plugin
Any deployment integrating vulnerable WP Cafe Pro endpoints

Discovery Timeline

2026-08-24 - CVE-2026-66585 published to the National Vulnerability Database
2026-08-24 - Last updated in NVD database

Technical Details for CVE-2026-66585

Vulnerability Analysis

The vulnerability stems from improper access control on plugin endpoints that return sensitive data. WP Cafe Pro exposes information through requests that do not enforce authentication or capability checks. Unauthenticated network requests to the affected endpoints return data that should be restricted to privileged users.

Because exploitation requires no credentials and no user interaction, attackers can automate discovery across WordPress sites running the plugin. The impact is limited to confidentiality; integrity and availability are not directly affected according to the disclosure.

Root Cause

The root cause is a missing or insufficient authorization check on data-returning routes in WP Cafe Pro before version 3.0.15. The plugin returns sensitive information without validating the requester's session or capabilities, aligning with the CWE-201 weakness pattern.

Attack Vector

Exploitation is performed over the network by sending crafted HTTP requests to the vulnerable plugin endpoints. No authentication, privileges, or user interaction are required. Refer to the Patchstack WP Cafe Pro Vulnerability advisory for endpoint-specific details.

No verified proof-of-concept code has been published. The vulnerability is described in prose only; see the linked advisory for technical specifics.

Detection Methods for CVE-2026-66585

Indicators of Compromise

Unauthenticated HTTP GET or POST requests to WP Cafe Pro plugin endpoints under /wp-json/ or /wp-admin/admin-ajax.php referencing wpcafe actions
Elevated volume of requests to plugin routes originating from a small set of IP addresses or automated user agents
Responses larger than expected returned to unauthenticated clients from plugin endpoints

Detection Strategies

Inventory WordPress installations and identify sites running WP Cafe Pro versions prior to 3.0.15
Review web server and WordPress access logs for repeated requests to WP Cafe Pro REST or AJAX routes from unauthenticated sources
Correlate plugin endpoint access with data egress volume to identify bulk scraping

Monitoring Recommendations

Deploy a web application firewall rule blocking unauthenticated access to WP Cafe Pro data endpoints
Alert on anonymous requests to admin-ajax.php invoking wpcafe-prefixed actions
Monitor for scanning patterns targeting the plugin path /wp-content/plugins/wpcafe-pro/

How to Mitigate CVE-2026-66585

Immediate Actions Required

Update WP Cafe Pro to version 3.0.15 or later on all affected WordPress sites
Audit access logs for prior unauthenticated requests to plugin endpoints and assess data exposure
Restrict access to /wp-admin/admin-ajax.php and plugin REST routes at the WAF where feasible

Patch Information

The vendor addressed the issue in WP Cafe Pro version 3.0.15. Site administrators should upgrade through the WordPress plugin manager or by installing the fixed release manually. See the Patchstack WP Cafe Pro Vulnerability advisory for release details.

Workarounds

Deactivate and remove WP Cafe Pro until the patched version can be installed
Apply a virtual patch via WAF rules that block unauthenticated calls to WP Cafe Pro REST and AJAX endpoints
Restrict site access using IP allowlists or authentication gateways during the remediation window

bash

# Configuration example: block unauthenticated WP Cafe Pro AJAX actions at NGINX
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^wpcafe_") {
        return 403;
    }
}