CVE-2026-22335: WooCommerce Frontend Manager SQL Injection – Update to 6.7.7

Technical summary

CVE-2026-22335 is a SQL injection vulnerability (CWE-89) affecting WooCommerce Frontend Manager – Ultimate prior to version 6.7.7. The vulnerability is network-accessible and requires low attack complexity, but mandates prior authentication at the subscriber privilege level or above. The CVSS 3.1 vector (8.5/HIGH) reflects high confidentiality impact with limited availability impact and no integrity impact. The broad scope designation indicates the vulnerability may affect resources beyond the vulnerable component itself, such as other databases or services sharing the same database server.

Business impact

Organizations running vulnerable versions of WooCommerce Frontend Manager – Ultimate face risk of unauthorized data disclosure from their WordPress database. Depending on plugin configuration and data sensitivity, this could expose customer information, order details, payment metadata, or other sensitive records. While the vulnerability requires authentication, compromised subscriber accounts—whether from weak passwords, credential reuse, or account takeover—could be leveraged by threat actors to extract database contents. The reputational and compliance consequences of data exposure (GDPR, CCPA, PCI DSS if applicable) may exceed the technical severity alone.

Affected systems

All installations of WooCommerce Frontend Manager – Ultimate plugin with versions prior to 6.7.7 are vulnerable. WordPress sites using this plugin for subscriber-facing frontends are at heightened risk, particularly those with user-created accounts or guest registration enabled. The scope of affected systems depends on plugin adoption; WooCommerce ecosystem plugins typically have broad distribution across e-commerce and marketplace deployments.

Exploitability

This vulnerability requires valid subscriber-level or higher authentication credentials. There is no evidence of active public exploitation or inclusion in the Known Exploited Vulnerabilities catalog at the time of publication. However, the low attack complexity and network accessibility mean that once an attacker has obtained valid login credentials (through phishing, credential stuffing, or account compromise), the exploit is straightforward to execute using standard SQL injection techniques or automated tools. Organizations with weak password policies or prevalent credential compromise are at elevated practical risk.

Remediation

Upgrade WooCommerce Frontend Manager – Ultimate to version 6.7.7 or later immediately. This patch addresses the SQL injection flaw by properly sanitizing and parameterizing database queries. Organizations unable to patch immediately should restrict subscriber account creation, enforce strong password policies, implement Web Application Firewall (WAF) rules to detect SQL injection patterns, and monitor database query logs for suspicious activity.

Patch guidance

Apply the WooCommerce Frontend Manager – Ultimate update to version 6.7.7 or higher. This is available through the WordPress plugin update mechanism. Administrators should test the patch in a staging environment before production rollout to ensure compatibility with other plugins, themes, and custom code. Verify the update completion by checking the plugin version in the WordPress admin dashboard (Plugins > Installed Plugins). No rollback complications are anticipated; the patch is a security hardening release.

Detection guidance

Monitor web server and database access logs for SQL injection signature patterns, including unusual characters (quotes, semicolons, SQL keywords like UNION, SELECT, OR) in POST request bodies targeting the WooCommerce Frontend Manager plugin endpoints. Query the database access log for unexpected or high-volume queries from subscriber accounts. Consider deploying a Web Application Firewall configured with SQL injection detection rules. WordPress security plugins (e.g., Wordfence, Sucuri) may offer additional detection if configured with appropriate signatures.

Why prioritize this

Despite not being listed in CISA's Known Exploited Vulnerabilities catalog, this vulnerability warrants rapid prioritization due to its HIGH CVSS score (8.5), network accessibility, and potential for sensitive data exfiltration. The authentication requirement reduces urgency compared to unauthenticated RCE vulnerabilities, but the broad scope and high confidentiality impact make it a material risk in any WooCommerce environment with user accounts. Patching difficulty is minimal, supporting quick remediation.

Risk score, explained

The CVSS 3.1 score of 8.5 reflects a combination of factors: network-based attack surface (AV:N), low barriers to exploitation once authenticated (AC:L), mandatory authentication (PR:L) that reduces but does not eliminate risk, high confidentiality impact from unauthorized database read access (C:H), no data integrity compromise (I:N), and limited availability impact (A:L). The 'Changed Scope' (S:C) designation elevates the score, indicating potential impact beyond the plugin component itself—for example, if the shared database contains other applications or sensitive systems. Organizations prioritizing data protection should treat this as critical.

Frequently asked questions