CVE-2026-73345: License Manager for WooCommerce SQLi Flaw

CVE-2026-73345 Overview

CVE-2026-73345 is a SQL injection vulnerability in the License Manager for WooCommerce WordPress plugin. The flaw affects versions up to and including 3.0.18. Authenticated customer-level users can inject SQL statements through vulnerable plugin inputs. The issue is classified under CWE-89, improper neutralization of special elements used in an SQL command.

Exploitation requires network access and low privileges but has high attack complexity. Successful attacks yield high confidentiality impact with limited availability impact, and the scope changes to affected components beyond the vulnerable plugin.

Critical Impact
Authenticated customers can extract sensitive database contents, including license keys, order data, and user credentials stored by WooCommerce.

Affected Products

License Manager for WooCommerce plugin versions <= 3.0.18
WordPress sites running WooCommerce with the vulnerable plugin installed
E-commerce deployments issuing software licenses through this plugin

Discovery Timeline

2026-08-18 - CVE-2026-73345 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-73345

Vulnerability Analysis

The License Manager for WooCommerce plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. An authenticated user with customer-level privileges can craft input that alters the intended query structure. The plugin manages license keys, activation records, and product mappings, all of which reside in database tables accessible through the injectable query path.

The scope change indicated in the CVSS vector means the injected SQL can reach data outside the plugin's direct control boundary. This typically implicates the broader WordPress database, including wp_users, wp_usermeta, and WooCommerce order tables. High attack complexity suggests the attacker must satisfy specific conditions, such as valid session state or particular request sequencing, to trigger the flaw reliably.

Root Cause

The root cause is improper neutralization of special SQL characters ([CWE-89]) in parameters processed by plugin endpoints available to authenticated customers. The plugin concatenates or improperly binds user input into SQL statements rather than using consistently parameterized queries.

Attack Vector

An attacker registers or authenticates as a customer on the target WooCommerce store. The attacker then submits crafted parameters to a vulnerable plugin endpoint. The injected payload manipulates the underlying query to return, modify, or exfiltrate data the attacker should not access. Refer to the Patchstack SQL Injection Vulnerability entry for advisory details.

// No verified proof-of-concept code has been published for CVE-2026-73345.
// Refer to the Patchstack advisory linked above for technical specifics.

Detection Methods for CVE-2026-73345

Indicators of Compromise

Unexpected UNION, SELECT, SLEEP, or INFORMATION_SCHEMA tokens in POST or GET parameters targeting License Manager for WooCommerce endpoints
Anomalous query durations or timeouts against WooCommerce database tables originating from authenticated customer sessions
Access patterns where a single customer account touches license, order, or user tables outside normal purchase workflows

Detection Strategies

Deploy a Web Application Firewall (WAF) with SQL injection signatures tuned for WordPress plugin parameters
Enable MySQL general query logging or slow query logging on staging to baseline legitimate plugin queries
Alert on HTTP 500 responses correlated with customer-authenticated requests to /wp-admin/admin-ajax.php or plugin REST endpoints

Monitoring Recommendations

Monitor authentication logs for high-frequency customer logins followed by unusual plugin activity
Track outbound data volume from the database host to detect bulk extraction attempts
Review WordPress audit logs for privilege changes or new administrator accounts created after suspicious customer activity

How to Mitigate CVE-2026-73345

Immediate Actions Required

Upgrade License Manager for WooCommerce to a version later than 3.0.18 as soon as the vendor publishes a fixed release
Audit customer accounts for suspicious registrations and disable inactive or unverified accounts
Rotate license keys and reset customer passwords if compromise is suspected

Patch Information

Refer to the Patchstack advisory for License Manager for WooCommerce for the latest remediation guidance and fixed version information. Apply plugin updates through the WordPress admin dashboard once available.

Workarounds

Disable the License Manager for WooCommerce plugin until a patched version is installed
Restrict customer registration and require manual approval for new customer accounts
Deploy a WAF rule blocking SQL metacharacters in requests to plugin endpoints

bash

# Disable the vulnerable plugin via WP-CLI until a patch is applied
wp plugin deactivate license-manager-for-woocommerce

# Verify plugin status
wp plugin status license-manager-for-woocommerce