CVE-2025-58679: AppMySite Auth Bypass Vulnerability

CVE-2025-58679 Overview

CVE-2025-58679 is a missing authorization vulnerability in the AppMySite WordPress plugin. The flaw affects all versions from the initial release through 3.15.0. Attackers can exploit incorrectly configured access control security levels to reach functionality that should require authentication or elevated privileges. The vulnerability is categorized under [CWE-862] (Missing Authorization) and is exploitable remotely over the network without user interaction or prior authentication.

Critical Impact
Unauthenticated remote attackers can access restricted plugin functionality on WordPress sites running AppMySite through version 3.15.0, leading to disclosure of information that should be protected by access controls.

Affected Products

AppMySite WordPress plugin versions up to and including 3.15.0
WordPress sites with the AppMySite plugin installed and active
Mobile app builder integrations relying on AppMySite endpoints

Discovery Timeline

2025-09-22 - CVE-2025-58679 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-58679

Vulnerability Analysis

The AppMySite plugin exposes functionality without properly verifying that the requesting user holds the required capabilities or role. This is a classic broken access control condition where authorization checks are either absent or misconfigured on plugin endpoints. Attackers reach the endpoints directly over HTTP or HTTPS and receive responses that should be gated behind authentication or capability checks.

The issue is limited to confidentiality impact based on the published metrics. The vulnerability does not permit modification of data or disruption of the WordPress site, but it can expose plugin-controlled information to any network-based requester.

Root Cause

The root cause is a missing or incorrectly implemented authorization layer within the plugin's request handlers. WordPress plugins typically enforce access through current_user_can() capability checks or nonce verification on REST and AJAX endpoints. In AppMySite versions through 3.15.0, one or more of these checks are absent or evaluate access levels incorrectly.

Attack Vector

An unauthenticated attacker sends a crafted HTTP request to a vulnerable AppMySite endpoint on a target WordPress site. The plugin processes the request without confirming the caller's identity or capability level. The response contains data or exposes actions that a properly configured access control layer would block. Refer to the Patchstack Vulnerability Advisory for endpoint-level technical details.

Detection Methods for CVE-2025-58679

Indicators of Compromise

Unexpected HTTP requests to AppMySite plugin routes under /wp-json/ or /wp-admin/admin-ajax.php from unauthenticated sources
Access log entries showing repeated calls to AppMySite endpoints from a single external IP address
Outbound data patterns from the WordPress host that correlate with enumeration of plugin resources

Detection Strategies

Inventory WordPress installations and identify sites running AppMySite versions at or below 3.15.0
Review web server access logs for anonymous requests to plugin endpoints that return HTTP 200 responses
Deploy Web Application Firewall (WAF) rules that flag unauthenticated access to AppMySite REST routes

Monitoring Recommendations

Alert on high-volume requests to /wp-json/appmysite/ or similar plugin paths without valid session cookies
Monitor WordPress audit logs for plugin actions performed without an authenticated user context
Track version drift across managed WordPress instances to identify installations still exposed to CVE-2025-58679

How to Mitigate CVE-2025-58679

Immediate Actions Required

Update the AppMySite plugin to a version later than 3.15.0 as soon as the vendor publishes a fixed release
Restrict access to WordPress administration and REST endpoints using network-level controls where feasible
Audit user roles and capabilities on affected sites to confirm no unauthorized changes occurred

Patch Information

The vendor advisory published through Patchstack documents the fixed version. Site operators should consult the Patchstack Vulnerability Advisory and apply the corresponding plugin update through the WordPress admin dashboard or WP-CLI.

Workarounds

Deactivate the AppMySite plugin on sites that cannot immediately upgrade past version 3.15.0
Deploy WAF rules that block unauthenticated requests to AppMySite REST and AJAX endpoints
Limit access to /wp-json/ routes to authenticated sessions using server-level authentication or IP allowlisting

bash

# Update AppMySite plugin via WP-CLI
wp plugin update appmysite --path=/var/www/html

# Or deactivate as a temporary workaround
wp plugin deactivate appmysite --path=/var/www/html