CVE-2025-64634: Avada Authorization Bypass Vulnerability

CVE-2025-64634 Overview

CVE-2025-64634 is a Missing Authorization vulnerability [CWE-862] affecting the ThemeFusion Avada WordPress theme. The flaw allows unauthenticated network attackers to access functionality that is not properly constrained by Access Control Lists (ACLs). The vulnerability affects all Avada versions up to and including 7.13.2. Successful exploitation results in limited integrity impact without requiring privileges or user interaction. The issue was published to the National Vulnerability Database (NVD) on December 16, 2025.

Critical Impact
Unauthenticated attackers can invoke Avada theme functionality intended to be restricted, enabling unauthorized modification of theme-controlled data on affected WordPress sites.

Affected Products

ThemeFusion Avada WordPress theme versions through 7.13.2
WordPress sites running Avada 7.13.1 and earlier
Any WordPress installation with a vulnerable Avada theme active

Discovery Timeline

2025-12-16 - CVE-2025-64634 published to NVD
2026-04-27 - Last updated in NVD database

Technical Details for CVE-2025-64634

Vulnerability Analysis

The vulnerability stems from broken access control within the Avada WordPress theme. One or more theme endpoints fail to enforce capability or nonce checks before executing privileged functionality. An attacker can issue crafted HTTP requests directly to these endpoints over the network. No authentication is required, and the request can be delivered without any user interaction on the target site.

The CWE-862 classification indicates the code path performs an action without first verifying that the requester possesses the required authorization. In WordPress themes, this typically occurs when AJAX handlers, REST routes, or admin-post actions are registered for both authenticated and unauthenticated users without adding a current_user_can() check or validating a nonce with check_ajax_referer(). The result is a limited-integrity exposure where attackers can manipulate theme-managed state.

Root Cause

The root cause is missing authorization logic in Avada handler functions through version 7.13.2. Functionality intended for administrators or editors is reachable without verifying the caller's role or capability. The handler executes its logic based solely on request parameters rather than enforcing an ACL check.

Attack Vector

Exploitation requires only network access to the WordPress site hosting a vulnerable Avada version. The attacker sends an HTTP request to the exposed handler endpoint, typically wp-admin/admin-ajax.php or a custom theme route. Because authentication is not required, the attack can be automated against any internet-facing site running Avada 7.13.2 or earlier.

No verified public proof-of-concept code is available. For exploitation specifics, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-64634

Indicators of Compromise

Unauthenticated POST requests to wp-admin/admin-ajax.php with Avada-specific action parameters
Unexpected modifications to theme options, Fusion Builder content, or theme-managed database records
Anomalous request volume from a single source targeting WordPress AJAX or REST endpoints
Theme configuration changes appearing in audit logs without a corresponding authenticated admin session

Detection Strategies

Review web server access logs for requests to Avada AJAX actions originating from unauthenticated sessions
Monitor WordPress audit plugins for theme option or content changes lacking an associated user ID
Inspect HTTP request bodies for parameters referencing Avada handler names sent from non-admin IP ranges

Monitoring Recommendations

Enable WordPress activity logging to capture theme-level configuration changes with user attribution
Forward web server and WordPress logs to a centralized SIEM for correlation across sites
Alert on bursts of admin-ajax.php traffic with Avada action values from unauthenticated clients
Track the installed Avada version across the estate and flag instances at or below 7.13.2

How to Mitigate CVE-2025-64634

Immediate Actions Required

Update the Avada theme to a version newer than 7.13.2 as soon as ThemeFusion publishes a fixed release
Inventory all WordPress sites and identify any running Avada 7.13.2 or earlier
Restrict access to wp-admin/admin-ajax.php from untrusted sources where business requirements permit
Review theme settings and recent content changes for signs of unauthorized modification

Patch Information

The vulnerability affects Avada through 7.13.2. Consult the Patchstack Vulnerability Report and the ThemeFusion changelog for the corresponding fixed release and upgrade instructions.

Workarounds

Deploy a Web Application Firewall (WAF) rule to block unauthenticated requests targeting Avada AJAX actions
Apply virtual patching through Patchstack or an equivalent WordPress security service until the theme is upgraded
Limit administrative endpoints with IP allowlists at the reverse proxy or WAF layer
Disable the Avada theme on non-production sites that do not require it until patched

bash

# Identify Avada theme version across a WordPress installation
wp theme get Avada --field=version

# List sites with vulnerable Avada versions (example shell loop)
for site in /var/www/*/; do
  wp --path="$site" theme get Avada --field=version 2>/dev/null
done