Vulnerability in Optima Express IDX — CVE-2026-93901

HighSeverity
CVSS 7.3

0.3%Estimated exploit probability
EPSS

10,000+ sitesInstalls

8.7.6Fixed in

What to do now

Update Optima Express IDX to 8.7.6 or later.

Affected versions

Everything up to and including 8.7.5

Affected: Optima Express IDX (plugin, optima-express)

Check: The plugin on wordpress.org / Our record for Optima Express IDX

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.

This description is reproduced verbatim from the public vulnerability record.

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.

Vulnerability in Optima Express IDX — CVE-2026-93901

What to do now

What the vulnerability is

Sources