CVE-2026-54838 in WC Vendors Marketplace Plugin
Summary
by MITRE • 06/25/2026
Subscriber SQL Injection in WC Vendors Marketplace <= 2.6.8 versions.
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Analysis
by VulDB Data Team • 06/25/2026
The vulnerability identified as subscriber sql injection in WC Vendors Marketplace versions 2.6.8 and earlier represents a critical security flaw that undermines the integrity of e-commerce platforms leveraging WordPress and WooCommerce. This vulnerability specifically affects the subscription management functionality within the marketplace plugin, where user input is not properly sanitized before being incorporated into database queries. The issue stems from inadequate input validation and parameterized query implementation, creating an avenue for malicious actors to manipulate database operations through crafted inputs.
The technical exploitation of this vulnerability occurs when unauthenticated or authenticated users submit specially crafted data through subscription-related forms or API endpoints. The flaw allows attackers to inject malicious sql commands that bypass normal authentication checks and execute arbitrary database operations. This type of injection vulnerability directly maps to common weakness enumeration cwes 89 and 20, which classify it as a sql injection vulnerability resulting from improper input handling and inadequate output encoding. The attack vector typically involves manipulation of form fields, url parameters, or api request payloads that are processed by the plugin's subscription management system.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and unauthorized access to sensitive customer information. Attackers can leverage this weakness to extract subscriber databases, modify user credentials, manipulate subscription statuses, and potentially escalate privileges within the affected wordpress environment. The vulnerability particularly impacts online marketplaces where multiple vendors operate under a single platform, as it allows unauthorized parties to access or modify subscription data belonging to various marketplace participants. This creates significant business risks including financial loss, regulatory compliance violations, and reputational damage from customer data exposure.
Mitigation strategies for this vulnerability require immediate patching of the wc vendors marketplace plugin to versions 2.6.9 or later where the sql injection flaws have been addressed through proper input sanitization and parameterized query implementation. Organizations should implement comprehensive input validation at multiple layers including application firewalls, web application firewalls, and code-level protections to prevent similar issues in other components. Security measures should include regular vulnerability assessments, automated scanning for sql injection patterns, and mandatory code reviews focusing on database interaction points. Additionally implementing least privilege access controls, regular security monitoring, and maintaining updated security patches across all wordpress plugins and themes helps reduce the attack surface and prevents exploitation of similar vulnerabilities in the broader ecosystem. The remediation process should also include comprehensive testing to ensure that the patched version maintains all existing functionality while eliminating the sql injection risk.