CVE-2025-58198 Overview
CVE-2025-58198 is a Missing Authorization vulnerability [CWE-862] in the Xpro Theme Builder plugin for WordPress. The flaw affects all versions up to and including 1.2.9. An authenticated attacker with low privileges can abuse incorrectly configured access control security levels to perform actions reserved for higher-privileged users. The issue impacts data integrity on affected WordPress sites.
Critical Impact
Authenticated users with low privileges can bypass authorization checks and modify plugin-controlled data without proper permissions.
Affected Products
- Xpro Xpro Theme Builder (xpro-theme-builder) WordPress plugin
- All versions from n/a through 1.2.9
- WordPress sites using Xpro Theme Builder with low-privileged user accounts enabled
Discovery Timeline
- 2025-08-27 - CVE-2025-58198 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in the NVD database
Technical Details for CVE-2025-58198
Vulnerability Analysis
The Xpro Theme Builder plugin exposes functionality that fails to verify whether the requesting user has the appropriate role or capability to perform the requested action. This Broken Access Control condition allows an authenticated user holding a low-privilege role to invoke operations intended for administrators or editors. The result is unauthorized modification of plugin-controlled data, templates, or settings managed by the theme builder.
The vulnerability is network-exploitable and requires low attack complexity. Exploitation requires authentication, but no user interaction is needed beyond the attacker's own session. Impact is scoped to integrity; confidentiality and availability are not directly affected based on the published vector.
Root Cause
The root cause is a missing authorization check [CWE-862] on one or more plugin endpoints or AJAX actions. The code path executes privileged logic without calling WordPress capability functions such as current_user_can() or verifying nonces tied to privileged roles. Any authenticated session, including Subscriber-level accounts on sites that permit open registration, can therefore reach the sensitive handler.
Attack Vector
An attacker first obtains or registers a low-privileged WordPress account on the target site. The attacker then sends a crafted HTTP request to the vulnerable plugin endpoint, typically through admin-ajax.php or a REST route exposed by Xpro Theme Builder. Because the endpoint lacks authorization enforcement, the server processes the request and applies the attacker-supplied changes. Refer to the Patchstack Vulnerability Assessment for additional technical context.
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Stop Identity AttacksDetection Methods for CVE-2025-58198
Indicators of Compromise
- Requests to Xpro Theme Builder AJAX actions or REST endpoints originating from accounts without administrative roles
- Unexpected changes to theme templates, headers, footers, or builder-managed content attributed to Subscriber or Contributor accounts
- New or modified plugin options and postmeta records tied to xpro-theme-builder without a corresponding administrative session
Detection Strategies
- Audit WordPress access logs for POST requests to /wp-admin/admin-ajax.php and /wp-json/ paths referencing xpro actions by non-administrative users
- Correlate WordPress user role data with plugin configuration changes recorded in the database audit trail
- Deploy WordPress security plugins or Web Application Firewall rules that flag privilege-mismatched API calls to Xpro Theme Builder
Monitoring Recommendations
- Enable verbose logging on admin-ajax.php and REST API endpoints exposed by installed plugins
- Alert on first-time use of Xpro Theme Builder endpoints by any account below the Editor role
- Monitor WordPress registration logs for unusual spikes that may precede exploitation attempts
How to Mitigate CVE-2025-58198
Immediate Actions Required
- Update the Xpro Theme Builder plugin to a version later than 1.2.9 as soon as the vendor publishes a fixed release
- Disable or deactivate the plugin on production sites until a patched version is confirmed available
- Review all existing WordPress user accounts and remove unused or untrusted low-privileged users
Patch Information
At the time of publication, the Patchstack advisory lists all versions through 1.2.9 as affected. Site operators should consult the Patchstack advisory and the WordPress plugin repository for the latest fixed version. Apply the patched release across all WordPress sites that use the plugin.
Workarounds
- Restrict user registration by disabling the "Anyone can register" option under WordPress General Settings
- Deploy a Web Application Firewall rule blocking non-administrative access to Xpro Theme Builder AJAX and REST endpoints
- Temporarily deactivate Xpro Theme Builder and switch to a supported theme builder until a fix is released
# Configuration example: disable open WordPress registration via WP-CLI
wp option update users_can_register 0
wp option update default_role subscriber
# Deactivate the vulnerable plugin until a patched version is installed
wp plugin deactivate xpro-theme-builder
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
