CVE-2026-57773 Overview
CVE-2026-57773 is a blind SQL injection vulnerability in the Zorem Advanced Shipment Tracking for WooCommerce plugin. The flaw stems from improper neutralization of special elements used in an SQL command [CWE-89]. Attackers with high privileges can inject arbitrary SQL statements through vulnerable parameters. The issue affects all versions of the plugin up to and including 4.0. Because the attack scope changes, exploitation can impact resources beyond the vulnerable component. The vulnerability is exploitable over the network without user interaction.
Critical Impact
Authenticated attackers can extract sensitive data from the WordPress database using blind SQL injection techniques, exposing customer orders, credentials, and shipment records.
Affected Products
- Zorem Advanced Shipment Tracking for WooCommerce plugin (woo-advanced-shipment-tracking)
- All versions from unspecified initial release through 4.0
- WordPress sites running WooCommerce with this plugin installed
Discovery Timeline
- 2026-07-13 - CVE CVE-2026-57773 published to NVD
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-57773
Vulnerability Analysis
The vulnerability is classified as blind SQL injection under [CWE-89]. Unlike error-based SQL injection, blind variants return no direct database output. Attackers infer data by observing conditional application responses or timing differences. The plugin fails to sanitize user-supplied input before concatenating it into SQL queries. This allows manipulation of query logic to extract database contents byte by byte. The Exploit Prediction Scoring System (EPSS) currently reports a probability of 0.372%.
Root Cause
The root cause is improper neutralization of special elements in SQL commands. The plugin constructs database queries by concatenating request parameters without using parameterized statements or prepared queries. WordPress provides the $wpdb->prepare() API to bind parameters safely, but the affected code paths do not use it consistently. This omission enables attacker-controlled data to alter query structure.
Attack Vector
An attacker must hold high privileges within the WordPress installation to reach the vulnerable endpoint. Once authenticated, the attacker sends crafted HTTP requests containing SQL payloads. The payloads leverage boolean-based or time-based techniques to leak data through conditional response behavior. The changed scope indicates the injection can affect database records used by other components beyond the plugin itself.
No public proof-of-concept code is available. Technical details are documented in the Patchstack Vulnerability Advisory.
Detection Methods for CVE-2026-57773
Indicators of Compromise
- Unusual SQL syntax fragments such as SLEEP(, BENCHMARK(, UNION SELECT, or AND 1=1 appearing in HTTP request parameters directed at plugin endpoints
- Repeated authenticated requests to woo-advanced-shipment-tracking administrative endpoints with incrementally varying payloads
- Unexpected slow query log entries originating from plugin database calls
- Elevated error rates or response time variance from /wp-admin/admin-ajax.php when the plugin is active
Detection Strategies
- Deploy a web application firewall (WAF) with SQL injection rule sets tuned for WordPress admin traffic
- Enable WordPress debug logging and monitor wp-content/debug.log for database errors referencing the plugin
- Correlate authenticated administrator sessions with anomalous query patterns in MySQL general query logs
- Alert on any request containing SQL keywords in parameters passed to plugin AJAX actions
Monitoring Recommendations
- Ingest WordPress access logs, PHP error logs, and MySQL query logs into a centralized SIEM for correlation
- Baseline normal administrative activity for the plugin and alert on deviations
- Track failed and successful privilege escalations that could precede exploitation attempts
- Review audit trails for high-privilege accounts accessing shipment tracking functionality outside business hours
How to Mitigate CVE-2026-57773
Immediate Actions Required
- Identify all WordPress sites running the Advanced Shipment Tracking for WooCommerce plugin at version 4.0 or earlier
- Update the plugin to the latest patched release available from the vendor or WordPress plugin repository
- Rotate credentials for administrator and shop manager accounts if compromise is suspected
- Audit the wp_users, wp_usermeta, and WooCommerce order tables for signs of unauthorized data access
Patch Information
The vendor has released a fixed version of the plugin. Consult the Patchstack Vulnerability Advisory for the specific patched version and update guidance. Apply the update through the WordPress admin panel or via WP-CLI.
Workarounds
- Deactivate the Advanced Shipment Tracking for WooCommerce plugin until the update can be applied
- Restrict access to WordPress administrative endpoints using IP allowlisting at the reverse proxy or WAF
- Enforce least privilege by removing unnecessary administrator or shop manager accounts
- Apply virtual patching rules in a WAF to block SQL injection payloads targeting plugin endpoints
# Update the plugin using WP-CLI
wp plugin update woo-advanced-shipment-tracking
# Or temporarily deactivate until patching is possible
wp plugin deactivate woo-advanced-shipment-tracking
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
