CVE-2026-93343 WebWizards CVE debrief

Who should care

Defenders responsible for WordPress installations using the MarketKing plugin, especially those with subscriber-level access or higher, should assess exposure and prioritize remediation.

Why it matters

CVE-2026-93343 is a HIGH-severity vulnerability in the MarketKing plugin for WordPress, allowing authenticated attackers to retrieve sensitive vendor information. Defenders should prioritize verification and remediation to prevent exposure of personally identifiable information.

• Authenticated attackers can retrieve internal user IDs, usernames, and email addresses of all registered vendors.
• Personally identifiable information is exposed to any logged-in user regardless of role.
• Verification of the MarketKing plugin version and remediation are necessary to prevent exploitation.
• Defenders should monitor for suspicious AJAX requests to the vendor management action.

Technical summary

The MarketKing plugin for WordPress before version 2.1.72 contains a missing authorization vulnerability in the marketking_admin_vendors_ajax AJAX action. This allows authenticated attackers with subscriber-level access or higher to retrieve the complete vendor directory by sending a crafted AJAX request, exposing personally identifiable information of registered vendors. The vulnerability has a CVSS score of 7.1 and is considered HIGH severity. Defenders should prioritize verifying and remediating this vulnerability in their WordPress installations, especially those with subscriber-level access or higher. The MarketKing plugin's changelog and the VulnCheck advisory offer additional context.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in their WordPress installations, especially those with subscriber-level access or higher.

Recommended defensive actions

• Verify and remediate the MarketKing plugin version in use.
• Restrict access to the marketking_admin_vendors_ajax AJAX action.
• Monitor for suspicious AJAX requests to the vendor management action.
• Update the MarketKing plugin to version 2.1.72 or later.
• 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.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 7.1 and HIGH severity. The MarketKing plugin's changelog and the VulnCheck advisory offer additional context.

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.