CVE-2026-10630 hookandhook CVE debrief

Who should care

WordPress administrators and security teams should assess exposure and prioritize remediation for installations using the WP Courses LMS plugin, especially those with custom-level access users.

Why it matters

CVE-2026-10630 is a medium-severity vulnerability in the WP Courses LMS plugin for WordPress, allowing authenticated attackers to read sensitive quiz data of other users. WordPress administrators and security teams should assess exposure and prioritize remediation.

• Authenticated attackers can read quiz answers and scores of other users.
• Custom-level access users and above can exploit this vulnerability.
• Nonce checks provide limited authorization barrier.
• Remediation priority is high for WordPress installations using the affected plugin.

Technical summary

The WP Courses LMS plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to and including 3.2.29. The vulnerability exists due to missing validation on the 'resultID' parameter, allowing authenticated attackers with custom-level access and above to read any other user's quiz answers and scores. Attackers can exploit this by enumerating the incrementing 'resultID' value via the 'wpcq_get_quiz_result' AJAX action. The only access control on this endpoint is a nonce check (wpc_nonce) that is exposed to every logged-in user on the frontend, providing no meaningful authorization barrier.

Defensive priority

Assess exposure and prioritize remediation for WordPress installations using the WP Courses LMS plugin, especially those with custom-level access users.

Recommended defensive actions

• Assess exposure by checking if the WP Courses LMS plugin is installed and if custom-level access users exist.
• Prioritize remediation by updating the plugin to a fixed version if available.
• Monitor for suspicious AJAX requests to the 'wpcq_get_quiz_result' action.
• Verify access controls and nonce checks for the affected endpoint.
• 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 vulnerability exists in all versions up to and including 3.2.29 of the WP Courses LMS plugin. Attackers can exploit this by enumerating the incrementing 'resultID' value via the 'wpcq_get_quiz_result' AJAX action.

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.