CVE-2026-8163 Overview
CVE-2026-8163 is a SQL Injection vulnerability affecting the Infility Global WordPress plugin in versions prior to 2.15.19. The plugin fails to sanitize and escape user-supplied parameters before passing them to SQL statements. Authenticated users with Subscriber-level access or higher can inject arbitrary SQL queries into the database. Successful exploitation allows attackers to read, modify, or delete data stored in the WordPress database, including credentials, posts, and configuration values.
Critical Impact
Authenticated attackers with minimal privileges can execute arbitrary SQL queries against the WordPress database, leading to data theft, integrity loss, and potential full site compromise.
Affected Products
- Infility Global WordPress plugin versions before 2.15.19
- WordPress sites with Subscriber registration enabled and the plugin installed
- Any WordPress deployment where an attacker can obtain Subscriber-level access
Discovery Timeline
- 2026-06-23 - CVE-2026-8163 published to NVD
- 2026-06-23 - Last updated in NVD database
Technical Details for CVE-2026-8163
Vulnerability Analysis
The vulnerability resides in the Infility Global plugin's handling of HTTP request parameters within database query construction. The plugin concatenates user-controlled input directly into SQL statements without applying wpdb::prepare() placeholders or esc_sql() sanitization. An authenticated attacker submits crafted parameter values containing SQL syntax to plugin endpoints accessible to logged-in users.
Because the access threshold is Subscriber, the barrier to exploitation is low on any WordPress instance that permits open registration. Subscribers normally have read-only privileges, so reaching SQL injection through their available endpoints represents a privilege boundary violation. The exploit requires no user interaction and runs over the network against the affected site.
Root Cause
The root cause is improper neutralization of special elements used in SQL commands [CWE-89]. The plugin trusts request parameters delivered through authenticated user actions and inserts them into query strings without parameter binding. The absence of prepared statements lets attacker-supplied characters such as quotes, comments, and UNION keywords alter query semantics.
Attack Vector
The attack is network-based and requires the attacker to authenticate to WordPress at the Subscriber tier or higher. After login, the attacker issues HTTP requests to vulnerable plugin endpoints with SQL metacharacters embedded in the targeted parameters. The injected payload runs in the database context of the WordPress site, granting read and write access to all tables.
No verified public exploit or proof-of-concept code is referenced in the advisory. Refer to the WPScan Vulnerability Report for the disclosure details.
Detection Methods for CVE-2026-8163
Indicators of Compromise
- HTTP requests from authenticated Subscriber accounts containing SQL syntax such as UNION SELECT, SLEEP(, INFORMATION_SCHEMA, or stacked queries directed at Infility Global plugin endpoints.
- Unexpected entries in the wp_users or wp_usermeta tables, including new administrator accounts or modified password hashes.
- Anomalous outbound database query patterns or sudden growth in query execution time tied to specific plugin URLs.
Detection Strategies
- Inspect web server access logs for Subscriber-authenticated sessions sending unusual URL or POST parameters containing single quotes, double dashes, or boolean payloads.
- Enable MySQL general or slow query logging to identify malformed or unexpectedly long queries originating from the plugin.
- Deploy a web application firewall ruleset for SQL injection signatures and review blocked events for Subscriber accounts.
Monitoring Recommendations
- Alert on creation of new WordPress users with elevated roles outside of approved administrative workflows.
- Monitor plugin update status across managed WordPress sites to confirm version 2.15.19 or later is deployed.
- Track login activity for dormant Subscriber accounts that suddenly issue write-heavy or query-heavy requests.
How to Mitigate CVE-2026-8163
Immediate Actions Required
- Update the Infility Global plugin to version 2.15.19 or later on every affected WordPress instance.
- Audit existing Subscriber accounts and disable registrations that are not required for site operation.
- Review the wp_users, wp_options, and plugin-specific tables for unauthorized modifications since the plugin was installed.
Patch Information
The vendor has addressed the vulnerability in Infility Global plugin version 2.15.19. Administrators should apply the update through the WordPress plugin dashboard or via WP-CLI. Verify the installed version after the update and confirm the plugin is loaded from the patched release. Consult the WPScan Vulnerability Report for vendor references.
Workarounds
- Disable the Infility Global plugin until the patched version can be installed.
- Disable open user registration in WordPress general settings to prevent untrusted Subscriber account creation.
- Restrict plugin endpoints behind a web application firewall rule that blocks SQL metacharacters in parameter values.
# Update the Infility Global plugin via WP-CLI
wp plugin update infility-global --version=2.15.19
wp plugin list --name=infility-global --fields=name,status,version
# Disable open registration if not required
wp option update users_can_register 0
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
