CVE-2026-57332: Critical Broken Access Control in Wallet System for WooCommerce ≤2.7.6

Technical summary

CVE-2026-57332 is a broken access control vulnerability (CWE-862) in the Wallet System for WooCommerce plugin up to and including version 2.7.6. The flaw allows authenticated users with subscriber-level privileges to bypass authorization checks and perform privileged operations such as modifying wallet balances or transaction records. The vulnerability requires network access and valid credentials but no user interaction, making it exploitable by any authenticated user. The CVSS 3.1 score of 7.1 (HIGH) reflects high impact to system integrity and partial availability impact, though confidentiality is not directly compromised.

Business impact

For WooCommerce store operators, this vulnerability poses significant operational and financial risk. Attackers could manipulate customer wallet balances, create fraudulent transactions, or erase payment records, leading to revenue loss, chargebacks, and customer disputes. The integrity of your financial ledger becomes unreliable, complicating accounting, audits, and regulatory compliance. Customer trust erodes when wallet functionality is compromised. For subscription or marketplace models that depend on wallet accuracy, this is a critical operational threat.

Affected systems

The vulnerability affects Wallet System for WooCommerce plugin in all versions up to and including 2.7.6. Any WordPress installation running this plugin version is at risk if it has subscriber-level users or if subscriber registration is enabled. Multi-vendor marketplaces and platforms with numerous registered accounts face higher exposure due to increased attack surface.

Exploitability

This vulnerability has a low barrier to exploitation. An attacker needs only valid subscriber-level credentials—the default lowest user role in WordPress—and network access to the site. No user interaction or special conditions are required. Subscriber accounts are commonly distributed to customers, forum participants, or other low-privilege users, making credential acquisition relatively straightforward through phishing, credential reuse, or account registration on the target site. Active exploitation is feasible and likely.

Remediation

Immediately update the Wallet System for WooCommerce plugin to a version above 2.7.6. Verify the patched version directly against the plugin vendor's official release notes or security advisory. If a patch is not yet available, restrict subscriber access, disable subscriber registration if not operationally necessary, and audit wallet transaction logs for signs of unauthorized modification. Implement role-based access controls strictly and monitor account activity.

Patch guidance

1. Back up your WordPress database and plugin files before applying updates. 2. Log in to your WordPress admin panel and navigate to Plugins > Installed Plugins. 3. Locate Wallet System for WooCommerce and check for available updates. 4. Click 'Update Now' if the version shown is higher than 2.7.6. 5. Verify the updated version in Plugins > Installed Plugins to confirm successful deployment. 6. Test wallet functionality in a staging environment if possible before deploying to production. 7. Review plugin release notes to confirm security fixes are included. If updates are not available from your plugin dashboard, consult the vendor's official repository or support channel for guidance on patch availability and timing.

Detection guidance

Monitor access logs and database query logs for subscriber-level accounts performing wallet-related operations, particularly balance modifications, transaction deletions, or bulk updates. Check for unusual changes to wallet tables in your WordPress database, especially `wp_postmeta` or custom wallet tables if the plugin uses them. Review user activity logs within WooCommerce for subscribers accessing wallet admin pages or triggering wallet API endpoints. Implement Web Application Firewall (WAF) rules to flag unauthorized wallet modification attempts. Enable audit logging on your database to capture schema changes and data manipulation tied to subscriber accounts.

Why prioritize this

Prioritize this patch as HIGH urgency. The vulnerability requires only subscriber-level credentials, which are widely distributed and easy to obtain. The impact on system integrity is significant—attackers can directly manipulate financial data. The lack of KEV status does not reduce the practical risk; active exploitation is feasible and likely in the wild. Any WooCommerce site storing customer wallet data should treat this as a critical integrity threat requiring immediate patching.

Risk score, explained

The CVSS 3.1 score of 7.1 reflects a HIGH severity vulnerability due to: (1) Network-accessible attack vector requiring no special network conditions; (2) Low attack complexity—standard plugin functionality is leveraged; (3) Low privilege requirement—any authenticated subscriber can exploit; (4) No user interaction needed; (5) High impact to integrity—wallet balances and transactions can be modified; (6) Partial availability impact—wallet services could be disrupted. Confidentiality is not directly impacted, preventing a critical score. However, the low privilege barrier and direct financial impact make this a priority patch in any real-world deployment.

Frequently asked questions