CVE-2026-18316

Received

Published: 16 Aug 2026, 05:27

Last modified:16 Aug 2026, 05:27

Vulnerability Summary

Overall Risk (default)

high

70/100

CVSS Score

9.1 CRITICAL

v3.1 (cve.org)

EPSS Score

No data

KEV

Not listed

Ransomware

No reports

Public exploits

None found

Dark Web

Not detected

Timeline

16 Aug 2026, 05:27

Published

Vulnerability first disclosed

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.

CVSS Metrics

v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Techniques & Countermeasures

CWE-862•Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Affected Systems

solacewp•solace extra
≤ 1.6.0