Description
The Solace Extra plugin for WordPress is vulnerable to unauthorized modification and loss of data due to a missing capability check on the import_zip() function in versions up to, and including, 1.6.0. The handler is registered on both wp_ajax_action-import-zip and wp_ajax_nopriv_action-import-zip and only verifies the 'ajax-nonce' nonce, which is emitted on every admin page via wp_localize_script (unrestricted admin_enqueue_scripts hook) and is therefore accessible to any authenticated user including Subscribers. This makes it possible for authenticated attackers, with Subscriber-level access and above, to wipe navigation menus, sidebar widgets (via update_option('sidebars_widgets', array())), all theme mods (via remove_theme_mods()), and Elementor templates, as well as trigger arbitrary demo-content imports.
References5
- plugins.trac.wordpress.org/browser/solace-extra/tags/1.6.0/admi…
- plugins.trac.wordpress.org/browser/solace-extra/tags/1.6.0/admi…
- plugins.trac.wordpress.org/browser/solace-extra/tags/1.6.0/incl…
- plugins.trac.wordpress.org/changeset?reponame=&old=3627961%40so…
- www.wordfence.com/threat-intel/vulnerabilities/id/4e427c4e-3e27…
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - EPSS — exploit probability
- 1% percentile: 49 · as of 11 November 2026
- CWE
- CWE-862
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