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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

Quick assessment

Affected
solacewp Solace Extra
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Solace Extra是WordPress基金会开源的一款扩展网站内容管理功能的CMS插件组件。 WordPress Solace Extra 1.6.0及之前版本存在授权问题漏洞，该漏洞源于import_zip()函数缺少能力检查，可能导致经过身份验证的攻击者未授权修改和丢失数据，例如清除导航菜单、侧边栏小工具、所有主题修改和Elementor模板，以及触发任意演示内容导入。

CVSS 9.1 · Critical EPSS 0.60% · P47

Affected Version Matrix 1

VendorProduct Version RangeStatus
solacewp Solace Extra ≤ 1.6.0 affected
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I. Basic Information for CVE-2026-18316

Vulnerability Information
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Vulnerability Title
Solace Extra <= 1.6.0 - Missing Authorization to Unauthenticated Site Content Deletion and Unauthorized Demo Import via action-import-zip AJAX Action
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Solace Extra 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Solace Extra是WordPress基金会开源的一款扩展网站内容管理功能的CMS插件组件。 WordPress Solace Extra 1.6.0及之前版本存在授权问题漏洞，该漏洞源于import_zip()函数缺少能力检查，可能导致经过身份验证的攻击者未授权修改和丢失数据，例如清除导航菜单、侧边栏小工具、所有主题修改和Elementor模板，以及触发任意演示内容导入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
solacewp Solace Extra 0 ~ 1.6.0 -

II. Public POCs for CVE-2026-18316

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III. Intelligence Information for CVE-2026-18316

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Patches & Fixes for CVE-2026-18316 (1)

IV. Related Vulnerabilities

Same product: Solace Extra
Same vendor: solacewp
Same weakness: CWE-862

V. Comments for CVE-2026-18316

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