CVE-2026-18442 wclovers CVE debrief

Who should care

Defenders responsible for WordPress installations with the WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin should assess exposure and prioritize patching or mitigation.

Why it matters

The vulnerability allows unauthenticated attackers to potentially extract sensitive information from the database by appending additional SQL queries into existing queries.

• Potential SQL injection attacks could lead to unauthorized data extraction
• Unauthenticated attackers could append additional SQL queries into existing queries

Technical summary

The WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin for WordPress is vulnerable to generic SQL Injection via the 'wcfmmp_user_location_lng' parameter in all versions up to, and including, 3.8.2. The vulnerability allows unauthenticated attackers to potentially extract sensitive information from the database by appending additional SQL queries into existing queries. This is caused by insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query, making it possible for attackers to inject malicious SQL code.

Defensive priority

Defenders should prioritize verifying the vulnerability in their inventory and applying patches or mitigations to prevent potential SQL injection attacks.

Recommended defensive actions

• Verify the vulnerability in your inventory
• Apply patches or mitigations to prevent potential SQL injection attacks
• Monitor for potential SQL injection attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability is caused by insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.