CVE-2026-18789 Overview
CVE-2026-18789 affects the Ezoic WordPress plugin before version 2.23.1. The plugin fails to properly restrict access to portions of its content export functionality. Unauthenticated attackers can trigger a server-side export of the site's database. The exported data includes user password hashes and password reset tokens. Attackers can also persistently change some plugin settings without authentication. The flaw is classified as Missing Authorization [CWE-862] and carries a network-based attack vector requiring no privileges or user interaction.
Critical Impact
Unauthenticated remote attackers can exfiltrate the entire WordPress database, including credential material that enables account takeover through offline hash cracking or direct password reset token abuse.
Affected Products
- Ezoic WordPress plugin versions prior to 2.23.1
- WordPress sites with the Ezoic plugin installed and active
- Any hosting environment exposing the plugin's export endpoints to the internet
Discovery Timeline
- 2026-08-12 - CVE-2026-18789 published to the National Vulnerability Database
- 2026-08-12 - Last updated in NVD database
Technical Details for CVE-2026-18789
Vulnerability Analysis
The Ezoic plugin exposes content export functionality intended for administrative use. The plugin does not verify the identity or capabilities of the caller before executing sensitive operations. As a result, any network client can invoke the export routine and receive a dump of the underlying WordPress database.
The exported dataset extends beyond content. It contains the wp_users table, which holds password hashes generated by WordPress's PHPass implementation. It also contains active password reset tokens. An attacker holding a valid reset token can request a password change for any account, including administrators, without needing to crack the hash.
A second impact vector allows unauthenticated attackers to modify plugin settings persistently. Attacker-controlled configuration changes create durable footholds and can be chained with other WordPress weaknesses. See the WPScan Vulnerability Report for the technical writeup.
Root Cause
The root cause is a missing authorization check [CWE-862] on plugin endpoints that perform privileged operations. The affected handlers accept requests without validating a WordPress nonce, verifying a logged-in session, or calling current_user_can() against an appropriate capability such as manage_options or export.
Attack Vector
Exploitation requires only network access to the WordPress site. The attacker issues an HTTP request to the vulnerable plugin endpoint, receives the exported database as the response, and then processes the returned password hashes and reset tokens offline. No credentials, prior session, or user interaction is required. Refer to the WPScan advisory for endpoint specifics.
Detection Methods for CVE-2026-18789
Indicators of Compromise
- Unauthenticated HTTP requests to Ezoic plugin export endpoints under /wp-admin/admin-ajax.php or /wp-json/ returning large response bodies
- Unexpected changes to Ezoic plugin settings recorded in the wp_options table without a corresponding admin session
- Password reset emails or successful password changes for administrator accounts that were not initiated by legitimate users
- Outbound egress spikes from the web server coinciding with requests to Ezoic plugin routes
Detection Strategies
- Review web server access logs for requests to Ezoic plugin endpoints originating from unauthenticated IP addresses
- Correlate large HTTP response sizes on plugin routes with a lack of preceding authentication cookies
- Alert on modifications to wp_options entries owned by the Ezoic plugin outside of maintenance windows
Monitoring Recommendations
- Enable WordPress audit logging to capture option changes and user metadata updates
- Forward web server and WordPress logs to a centralized analytics platform for retention and correlation
- Monitor for use of leaked password reset tokens by watching wp_usermeta entries for _password_reset_key consumption
How to Mitigate CVE-2026-18789
Immediate Actions Required
- Update the Ezoic WordPress plugin to version 2.23.1 or later on every affected site
- Force a password reset for all WordPress accounts, prioritizing administrators, if the plugin was exposed prior to patching
- Invalidate outstanding password reset tokens by clearing _password_reset_key values from wp_usermeta
- Audit the wp_users and plugin option tables for unauthorized changes
Patch Information
The vendor addressed the missing authorization checks in Ezoic plugin version 2.23.1. Administrators should upgrade through the WordPress plugin manager or by deploying the updated plugin package. Confirm the installed version by inspecting the plugin header in wp-content/plugins/ezoic-integration/.
Workarounds
- Deactivate and remove the Ezoic plugin until the patched version can be deployed
- Restrict access to /wp-admin/admin-ajax.php and /wp-json/ routes handled by the plugin using a web application firewall rule
- Block unauthenticated requests to Ezoic-specific action parameters at the reverse proxy layer
# Example WP-CLI commands to update the plugin and rotate credentials
wp plugin update ezoic-integration --version=2.23.1
wp user reset-password $(wp user list --role=administrator --field=ID)
wp db query "DELETE FROM wp_usermeta WHERE meta_key IN ('_password_reset_key','_password_reset_time');"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
