CVE-2026-18316

Solace Extra <= 1.6.0 - Missing Authorization to Unauthenticated Site Content Deletion and Unauthorized Demo Import via action-import-zip AJAX Action

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.

We have discovered 497 live websites that are affected by CVE-2026-18316.

Run a Free Instant Scan



Affected Software

Product  Solace Extra
Category Wordpress Plugins
Vulnerable Domains497 live websites (98% of Solace Extra install base)
Vulnerable Versions
  • from 0 through 1.6
Vulnerable Versions Count8 versions ( 89% of all versions)


Common Weakness Enumeration

CWE-862 Missing Authorization



Details

  • Published - Aug 16, 2026
  • Updated - Aug 17, 2026

Credits

  • Wordfence PRISM (finder)

Website Distribution by Country

Number of websites using CVE-2026-18316
United States185 websites


Cyprus60 websites
Germany40 websites
GB28 websites
Australia15 websites
Netherlands15 websites
South Africa15 websites
Canada11 websites
India10 websites
Spain8 websites

Website Distribution by TLD

Number of websites using CVE-2026-18316
.com278 websites
.org31 websites
.co.uk19 websites
.net13 websites
.de12 websites
.nl10 websites
.com.au10 websites
.ca6 websites
.be5 websites
.es5 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-18316

Top websites that are affected by CVE-2026-18316. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*****.com Cyprus***,***
*****.org United States*,***,***
********************.com United States*,***,***
************.***.hn Honduras*,***,***
********.com United States*,***,***
*********.com Cyprus*,***,***
**********.org United States*,***,***
**********.com United States*,***,***
****************.com Cyprus*,***,***
****.amsterdam Netherlands*,***,***
See full domain list

FAQ

CVE-2026-18316 is Missing Authorization in Solace Extra
A total of 497 websites have been identified as vulnerable to CVE-2026-18316, based on global website indexing conducted by WebTechSurvey.
The Solace Extra is affected by the CVE-2026-18316 vulnerability.
Solace Extra versions up to and including 1.6 are vulnerable to CVE-2026-18316.