CVE-2026-12126 wclovers CVE debrief

Who should care

Users of WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin for WordPress, particularly those with Vendor-level access and above, should be aware of this vulnerability and take immediate action to protect their sites. This includes updating the plugin to the latest version and restricting Vendor-level access to trusted users only.

Technical summary

The vulnerability exists in the WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin for WordPress, specifically in the handling of attachment 'post_title'. Insufficient input sanitization and output escaping allow authenticated attackers with Vendor-level access and above to inject arbitrary web scripts. These scripts can be executed when a user accesses an injected page. The vulnerability has a CVSS score of 6.4 and is classified as MEDIUM severity.

Defensive priority

High priority should be given to updating the WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin to a version that addresses this vulnerability.

Recommended defensive actions

• Update the WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin to the latest version.
• Restrict Vendor-level access and above to trusted users only.
• Monitor for suspicious activity, particularly injections of arbitrary web scripts.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-11T07:16:45.633Z and has not been modified since then. The NVD entry is currently 6.4, MEDIUM severity. The WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Attachment 'post_title' in all versions up to, and including, 3.7.3 due to insufficient input sanitization and output escaping. Evidence is limited to public CVE and NVD data.

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.