Description
The Flex Import plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.0. This is due to the license_activate_fleximp() and license_deactivate_fleximp() functions, hooked to the wp_ajax_license_activate_fleximp and wp_ajax_license_deactivate_fleximp AJAX actions, lacking both a capability check (current_user_can()) and nonce verification (the client-side script sends a 'wpnonce' value but the handlers never validate it). This makes it possible for authenticated attackers, with subscriber-level access and above, to activate an arbitrary/fraudulent license key (persisting it via update_option('fleximp_is_premium') and toggling validation, suspension, and bundle status options) or deactivate the site's legitimate license (deleting the stored key and setting fleximp_validation_status to false), thereby disrupting the plugin's premium functionality.
References10
- plugins.trac.wordpress.org/browser/flex-import/tags/2.5/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.5/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.5/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.5/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.8/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.8/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.8/include…
- plugins.trac.wordpress.org/browser/flex-import/tags/2.8/include…
- plugins.trac.wordpress.org/changeset?reponame=&old=3630901%40fl…
- www.wordfence.com/threat-intel/vulnerabilities/id/0143b789-06ea…
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 38 · as of 8 November 2026
- CWE
- CWE-862
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