CVE-2026-93901
Received Received - Intake

Privilege Escalation in Optima Express IDX WordPress Plugin

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: Wordfence

Description
The Optima Express IDX plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 8.7.5. This is due to the `provisionBlogCredentials()` function in `iHomefinderAdmin.php` being reachable via the `wp_ajax_nopriv_ihf_clear_cache` AJAX action — through the call chain `iHomefinderAjaxHandler::clearCache()` → `activateAuthenticationToken()` → `getAuthenticationInfo()` → `provisionBlogCredentials()` — with no capability check, nonce verification, or ownership validation, and the function unconditionally calling `$user->set_role('author')` on whichever WordPress account matches the hard-coded login `optima-express` via `get_user_by('login', 'optima-express')`. This makes it possible for unauthenticated attackers to escalate a pre-registered `optima-express` account to the Author role, gaining `publish_posts`, `upload_files`, and `edit_published_posts` capabilities, including access to the plugin's own `/wp-json/optima-express/v1/blog-post` REST endpoint. Exploitation requires open user registration to be enabled on the target site, and the attacker must register the `optima-express` username before the plugin has had the opportunity to provision that login for its own integration account.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-93901
EUVD
EUVD-2026-86601

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ihomefinder optima_express to 8.7.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

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Executive Summary

This vulnerability is a privilege escalation flaw in the Optima Express IDX WordPress plugin up to version 8.7.5. It allows unauthenticated attackers to escalate a pre-registered account named 'optima-express' to the Author role by exploiting an unprotected AJAX action. The flaw occurs because the plugin's code does not verify user capabilities, nonces, or ownership before granting elevated permissions.

Detection Guidance

Check for unauthorized creation or modification of the 'optima-express' user account in WordPress. Inspect WordPress logs for suspicious AJAX calls to 'wp_ajax_nopriv_ihf_clear_cache' or REST API access to '/wp-json/optima-express/v1/blog-post'. Review user roles for unexpected 'Author' assignments.

Impact Analysis

If exploited, this vulnerability could allow attackers to gain Author-level access on your WordPress site. This means they can publish posts, upload files, and edit existing posts. Attackers could also access the plugin's REST endpoint to further compromise your site. Exploitation requires open user registration to be enabled and the attacker to register the 'optima-express' username before the plugin provisions it.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized users to gain elevated privileges. Unauthenticated attackers could escalate a pre-registered account to the Author role, gaining access to publish posts, upload files, and edit published posts. This unauthorized access may lead to data breaches or unauthorized modifications, violating confidentiality and integrity requirements under GDPR and HIPAA.

Mitigation Strategies

Disable open user registration in WordPress settings. Update the Optima Express IDX plugin to version 8.7.6 or later if available. Remove or restrict the 'optima-express' user account if it was created unexpectedly. Monitor for unauthorized role changes or REST API access.

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