Missing authorization in solacewp Solace Extra
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18316
- 2026-10-03 Alias added: GHSA-xw86-2976-mc83
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4e427c4e-3e27-49e3-ba64-6241b430d5d8?source=cve
- https://plugins.trac.wordpress.org/browser/solace-extra/tags/1.6.0/admin/import.php#L2382
- https://plugins.trac.wordpress.org/browser/solace-extra/tags/1.6.0/includes/class-solace-extra.php#L336
- https://plugins.trac.wordpress.org/browser/solace-extra/tags/1.6.0/admin/class-solace-extra-admin.php#L289
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3627961%40solace-extra&new=3627961%40solace-extra
More solacewp vulnerabilities
- TI-2025-23717 WordPress Solace Extra plugin <= 1.3.1 - Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 9.9
- TI-2026-21929 WordPress Solace Extra plugin <= 1.6.0 - Broken Access Control vulnerability CVSS 3.1HIGH 7.1
- TI-2026-11254 Missing authorization in solacewp Solace Extra CVSS 3.1MEDIUM 5.3
- TI-2025-42369 WordPress Solace theme <= 2.1.16 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2025-29961 WordPress Solace Extra plugin <= 1.3.1 - Server Side Request Forgery (SSRF) Vulnerability CVSS 3.1MEDIUM 4.9
- TI-2025-36008 WordPress Solace Extra Plugin <= 1.3.2 - Server Side Request Forgery (SSRF) Vulnerability CVSS 3.1MEDIUM 4.4
Sources
- CVE-2026-18316 · CVE Program
- CVE-2026-18316 · NVD
- FIRST EPSS
- GHSA-xw86-2976-mc83 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences