CVE-2025-39513: ActiveDEMAND Auth Bypass Vulnerability

CVE-2025-39513 Overview

CVE-2025-39513 is a missing authorization vulnerability in the ActiveDEMAND Online Agency Marketing Automation plugin for WordPress. The flaw affects all versions of ActiveDEMAND up to and including 0.2.46. Attackers can reach plugin functionality that is not properly constrained by access control lists (ACLs). The issue is classified under CWE-862: Missing Authorization. Exploitation requires no authentication or user interaction and is performed over the network. Successful abuse can affect the availability of the affected WordPress site by invoking privileged plugin operations without permission checks.

Critical Impact
Unauthenticated network attackers can invoke ActiveDEMAND plugin functionality that lacks proper authorization checks, resulting in low availability impact on affected WordPress sites.

Affected Products

ActiveDEMAND Online Agency Marketing Automation plugin for WordPress
All versions from n/a through <= 0.2.46
WordPress installations with the ActiveDEMAND plugin enabled

Discovery Timeline

2025-04-16 - CVE-2025-39513 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-39513

Vulnerability Analysis

CVE-2025-39513 is a broken access control weakness in the ActiveDEMAND WordPress plugin. The plugin exposes functionality that does not perform sufficient authorization checks before executing sensitive operations. Because the checks are missing rather than merely weak, requests from any unauthenticated network client can reach code paths intended for privileged users.

The vulnerability is categorized as CWE-862 Missing Authorization. In WordPress plugins, this pattern typically appears when AJAX handlers registered through wp_ajax_nopriv_* actions or REST API endpoints omit current_user_can() capability checks and nonce verification. The Exploit Prediction Scoring System (EPSS) probability for this CVE is 0.508%.

Root Cause

The root cause is the absence of authorization enforcement on one or more plugin endpoints. The plugin registers callable actions but does not validate whether the requesting user holds the appropriate WordPress capability or role before executing the action. This design flaw allows callers to skip the intended access control gate.

Attack Vector

An attacker sends crafted HTTP requests directly to the vulnerable ActiveDEMAND endpoint on a target WordPress site. No credentials, session, or user interaction are required. Because the impact is limited to availability, an attacker can disrupt plugin-managed functions or trigger state changes that degrade site operation. See the Patchstack Vulnerability Report for endpoint specifics.

No public proof-of-concept exploit or verified code sample is available at this time. Refer to the linked advisory for technical details.

Detection Methods for CVE-2025-39513

Indicators of Compromise

Unauthenticated HTTP POST or GET requests to ActiveDEMAND plugin paths under /wp-content/plugins/activedemand/ or admin-ajax.php with ActiveDEMAND action parameters
Unexpected changes to ActiveDEMAND configuration, campaigns, or associated database tables from anonymous sources
Access log entries showing repeated requests to ActiveDEMAND endpoints from a single IP without a valid WordPress authentication cookie

Detection Strategies

Inspect WordPress access logs for requests to admin-ajax.php with ActiveDEMAND action values from sessions lacking wordpress_logged_in_* cookies
Deploy a web application firewall (WAF) rule that flags anonymous access to ActiveDEMAND administrative actions
Compare installed plugin versions across the fleet against version 0.2.46 and alert on vulnerable instances

Monitoring Recommendations

Enable WordPress audit logging to capture plugin action invocations and correlate with authentication state
Monitor outbound network activity from the WordPress host for anomalous callbacks initiated by plugin functionality
Alert on spikes in HTTP 200 responses to ActiveDEMAND endpoints originating from previously unseen IP addresses

How to Mitigate CVE-2025-39513

Immediate Actions Required

Identify all WordPress installations running the ActiveDEMAND plugin at version <= 0.2.46
Disable the ActiveDEMAND plugin on affected sites until a vendor patch is applied
Restrict access to /wp-admin/admin-ajax.php and REST API routes at the WAF or reverse proxy where feasible

Patch Information

At the time of publication, the Patchstack advisory lists versions through 0.2.46 as affected without a fixed release specified. Administrators should monitor the ActiveDEMAND plugin repository for a version higher than 0.2.46 and upgrade as soon as a patched release is available.

Workarounds

Deactivate and remove the ActiveDEMAND plugin if it is not required for business operations
Apply virtual patching through a WAF to block unauthenticated requests to ActiveDEMAND action handlers
Enforce IP allowlisting on /wp-admin/ to limit exposure of plugin AJAX endpoints to trusted networks

bash

# Example: block unauthenticated ActiveDEMAND AJAX actions at nginx
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^activedemand_") {
        if ($http_cookie !~* "wordpress_logged_in_") {
            return 403;
        }
    }
    include fastcgi_params;
    fastcgi_pass php_upstream;
}