CVE-2025-22721: ApplyOnline Authorization Bypass Vulnerability

CVE-2025-22721 Overview

CVE-2025-22721 is a missing authorization vulnerability in the ApplyOnline WordPress plugin developed by Farhan Noor. The flaw affects all plugin versions up to and including 2.6.7.1. The plugin fails to enforce access control checks on certain functionality, allowing authenticated users with low privileges to interact with resources beyond their intended permission level. The vulnerability is categorized under [CWE-862] Missing Authorization and impacts the confidentiality of data managed by the plugin.

Critical Impact
Authenticated attackers with minimal privileges can access application functionality that should be restricted, exposing sensitive applicant or form data managed through the ApplyOnline plugin.

Affected Products

ApplyOnline plugin for WordPress by Farhan Noor
All versions from n/a through 2.6.7.1
WordPress sites running the vulnerable apply-online plugin

Discovery Timeline

2025-01-21 - CVE-2025-22721 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-22721

Vulnerability Analysis

The ApplyOnline plugin exposes functionality that does not verify whether the requesting user holds the required capability or role. WordPress plugins commonly rely on current_user_can() checks or nonce validation to gate sensitive actions. When these checks are missing or incorrectly configured, authenticated users with basic roles such as Subscriber can invoke restricted operations.

Exploitation requires the attacker to hold valid credentials on the target WordPress site. No user interaction is needed beyond issuing an HTTP request to the vulnerable endpoint. The impact is limited to information disclosure, with no direct effect on integrity or availability.

Root Cause

The root cause is an incorrectly configured access control layer in the plugin's request handlers. The plugin registers AJAX or REST endpoints without validating the caller's capability against the sensitivity of the underlying action. This omission maps directly to CWE-862 (Missing Authorization).

Attack Vector

The attack is delivered over the network against a WordPress installation running the vulnerable plugin. An authenticated user submits crafted requests to plugin endpoints that should be reserved for administrators or specific roles. Because the plugin does not enforce role-based restrictions, the request succeeds and returns data the caller should not access. See the Patchstack WordPress Vulnerability Advisory for additional technical detail.

No verified public proof-of-concept code is available. Refer to the vendor advisory for endpoint-level detail.

Detection Methods for CVE-2025-22721

Indicators of Compromise

Unexpected HTTP POST or GET requests to admin-ajax.php or REST routes registered by the apply-online plugin from low-privilege user sessions
Access log entries showing Subscriber or Contributor accounts triggering plugin actions typically reserved for administrators
Anomalous export or read requests against ApplyOnline form submission data

Detection Strategies

Audit WordPress access logs for requests to ApplyOnline endpoints correlated with non-administrative user IDs
Deploy a Web Application Firewall (WAF) rule to flag unauthenticated or low-privilege requests to plugin AJAX actions
Enable WordPress activity logging plugins to record capability checks and privileged actions across user roles

Monitoring Recommendations

Monitor for spikes in admin-ajax.php traffic originating from unusual user accounts or IP ranges
Alert on any modification to plugin files or unexpected creation of new administrator accounts
Review scheduled reports for ApplyOnline form data exports occurring outside normal business workflows

How to Mitigate CVE-2025-22721

Immediate Actions Required

Update the ApplyOnline plugin to a version later than 2.6.7.1 as soon as the vendor publishes a fixed release
Audit existing WordPress user accounts and remove unused or untrusted low-privilege accounts
Restrict user registration on public-facing WordPress sites where the plugin is deployed

Patch Information

At the time of publication, the Patchstack advisory lists all versions through 2.6.7.1 as affected. Site administrators should monitor the plugin repository for a patched release and apply it immediately upon availability.

Workarounds

Deactivate and remove the ApplyOnline plugin until a patched version is released if the functionality is not business-critical
Enforce WAF rules that block low-privilege users from calling plugin-specific AJAX actions
Limit WordPress role assignments so that only trusted accounts exist on sites running the vulnerable plugin

bash

# Example: temporarily disable the plugin via WP-CLI until a patch is available
wp plugin deactivate apply-online
wp plugin delete apply-online