EUVD-2026-39368
GHSA-837c-38p7-p5rv
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
Network-reachable injection needing only a Subscriber account (PR:L) with no UI; SQLi yields high data disclosure (C:H) and plausible limited data modification (I:L), scored S:U absent evidence of cross-system impact.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
1DescriptionCVE.org
Subscriber SQL Injection in WC Vendors Marketplace <= 2.6.8 versions.
AnalysisAI
SQL injection in the WC Vendors Marketplace WordPress plugin (versions <= 2.6.8) allows authenticated users holding only a low-privilege Subscriber-level account to inject arbitrary SQL into backend queries. Reported by Patchstack and tracked as CVE-2026-54838 (CWE-89), the flaw carries a CVSS 8.5 with a scope change, reflecting that a minimally-privileged marketplace account can read sensitive data across the WordPress database. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV.
Technical ContextAI
WC Vendors Marketplace is a WooCommerce extension (vendor namespace rymera_web_co) that turns a WordPress/WooCommerce store into a multi-vendor marketplace, exposing vendor- and customer-facing endpoints that query the shared WordPress database. The root cause is CWE-89 (Improper Neutralization of Special Elements used in an SQL Command): user-supplied input reachable by a Subscriber-role account is concatenated into a SQL statement without proper parameterization or sanitization, letting the attacker alter query logic. The affected CPE is cpe:2.3:a:rymera_web_co:wc_vendors_marketplace covering all versions through 2.6.8. Because WordPress stores credentials, user data, order data, and session tokens in the same MySQL/MariaDB schema, an injection point reachable by a low-tier account can pivot to data outside the attacker's own records, which is consistent with the CVSS scope-change (S:C) rating.
RemediationAI
No vendor-released patch version is identified in the available data, so the primary action is to upgrade to the first release later than 2.6.8 published by Rymera Web Co once available and to monitor the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/wc-vendors/vulnerability/wordpress-wc-vendors-marketplace-plugin-2-6-8-sql-injection-vulnerability) and the official WC Vendors changelog for the exact fixed version. Because exploitation requires a Subscriber account, effective compensating controls are: disable open user registration (WordPress Settings > General > 'Anyone can register') to remove the low-privilege foothold, accepting that this blocks self-service vendor/customer sign-ups; deploy a WAF or Patchstack virtual patch with SQLi rules in front of the vendor endpoints, accepting possible false positives on legitimate vendor queries; and restrict or audit existing Subscriber-level accounts. As a temporary measure, deactivating the WC Vendors Marketplace plugin fully removes the exposure but disables marketplace functionality.
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External POC / Exploit Code
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