CVE-2024-43310 Overview
CVE-2024-43310 is a missing authorization vulnerability in the UkrSolution Print Barcode Labels for your WooCommerce plugin for WordPress. The flaw affects all versions up to and including 3.4.9. Authenticated attackers with low privileges can invoke plugin functions that lack proper access control checks, allowing them to access or modify data that should be restricted to higher-privileged roles. The issue is tracked as CWE-862: Missing Authorization.
Critical Impact
A low-privileged authenticated user can exploit incorrectly configured access control levels in the plugin to compromise confidentiality, integrity, and availability of WooCommerce product and order data.
Affected Products
- UkrSolution Print Barcode Labels for your WooCommerce products/orders plugin
- All versions from initial release through 3.4.9
- WordPress sites running WooCommerce with this plugin installed
Discovery Timeline
- 2024-11-01 - CVE-2024-43310 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-43310
Vulnerability Analysis
The vulnerability is a broken access control issue in the Print Barcode Labels for your WooCommerce plugin. Plugin endpoints fail to verify the requesting user's role or capability before executing privileged actions. WordPress plugins typically enforce authorization through current_user_can() capability checks and nonce validation on AJAX and admin-post handlers. When these checks are missing or configured against an incorrect capability, users with minimal privileges such as Subscriber or Customer can call functions intended for shop managers or administrators.
An attacker who exploits this flaw against a WooCommerce store can read or manipulate product data, order records, and label generation routines. This directly affects the integrity of order fulfillment and exposes customer information contained in orders.
Root Cause
The root cause is the absence of capability checks on plugin handlers that expose product and order operations. The plugin relies on authentication alone rather than verifying that the authenticated user is authorized to invoke the specific action, which corresponds to CWE-862.
Attack Vector
Exploitation requires network access to the WordPress site and a valid low-privileged account. WooCommerce sites commonly permit Customer-role registration, which satisfies this prerequisite. The attacker sends crafted HTTP requests to vulnerable plugin endpoints, invoking functions that should be restricted to store operators. No user interaction is required beyond the attacker's own session.
See the Patchstack Vulnerability Database Entry for additional technical detail.
Detection Methods for CVE-2024-43310
Indicators of Compromise
- Unexpected HTTP POST requests to plugin AJAX endpoints such as admin-ajax.php with plugin-specific action parameters originating from low-privileged accounts.
- Modifications to WooCommerce products, orders, or barcode label configurations that do not correlate with legitimate administrator activity.
- New or newly active Customer or Subscriber accounts issuing requests targeting plugin handlers.
Detection Strategies
- Review web server access logs for requests to plugin endpoints correlated with non-administrative user sessions.
- Enable WordPress audit logging to record capability-relevant actions such as product edits, order changes, and plugin-triggered exports.
- Alert on anomalous request rates to admin-ajax.php where the referring user role is Customer or Subscriber.
Monitoring Recommendations
- Monitor plugin version inventory across WordPress installations and flag any instance running version 3.4.9 or earlier.
- Track outbound data volumes from WooCommerce sites to detect bulk order or label extraction.
- Correlate WordPress authentication events with subsequent privileged action attempts to surface horizontal or vertical privilege abuse.
How to Mitigate CVE-2024-43310
Immediate Actions Required
- Update the UkrSolution Print Barcode Labels for your WooCommerce plugin to a version released after 3.4.9 that addresses the missing authorization check.
- Audit existing user accounts and remove or disable inactive low-privileged accounts on WooCommerce sites.
- Review recent order and product changes for signs of unauthorized modification and restore from clean backups if tampering is confirmed.
Patch Information
According to the Patchstack Vulnerability Database Entry, the issue affects the plugin through version 3.4.9. Site administrators should upgrade to the latest available release provided by UkrSolution that includes proper capability checks on all plugin handlers.
Workarounds
- If an upgrade cannot be applied immediately, deactivate the Print Barcode Labels plugin until a patched version is installed.
- Restrict user registration on WooCommerce sites where public customer registration is not required for business operations.
- Deploy a web application firewall rule to block requests to plugin AJAX actions from sessions that do not hold shop manager or administrator capabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
