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CVE-2026-1509— Avada (Fusion) Builder <= 3.15.1 - Authenticated (Subscriber+) Limited Arbitrary WordPress Action Execution

Quick assessment

Affected
themefusion Avada (Fusion) Builder
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Avada (Fusion) Builder 3.15.1及之前版本存在安全漏洞，该漏洞源于output_action_hook函数接受用户控制的输入来触发任意WordPress操作钩子，可能导致权限提升、文件包含、

CVSS 5.4 · Medium EPSS 0.31% · P24
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I. Basic Information for CVE-2026-1509

Vulnerability Information
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Vulnerability Title
Avada (Fusion) Builder <= 3.15.1 - Authenticated (Subscriber+) Limited Arbitrary WordPress Action Execution
Source: CVE Program / CVE List V5
Vulnerability Description
The Avada (Fusion) Builder plugin for WordPress is vulnerable to Arbitrary WordPress Action Execution in all versions up to, and including, 3.15.1. This is due to the plugin's `output_action_hook()` function accepting user-controlled input to trigger any registered WordPress action hook without proper authorization checks. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary WordPress action hooks via the Dynamic Data feature, potentially leading to privilege escalation, file inclusion, denial of service, or other security impacts depending on which action hooks are available in the WordPress installation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Avada (Fusion) Builder 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Avada (Fusion) Builder 3.15.1及之前版本存在安全漏洞，该漏洞源于output_action_hook函数接受用户控制的输入来触发任意WordPress操作钩子，可能导致权限提升、文件包含、
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
themefusion Avada (Fusion) Builder 0 ~ 3.15.1 -

II. Public POCs for CVE-2026-1509

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III. Intelligence Information for CVE-2026-1509

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Vendor Advisories for CVE-2026-1509 (1)

IV. Related Vulnerabilities

Same product: Avada (Fusion) Builder
Same vendor: themefusion
Same weakness: CWE-94

V. Comments for CVE-2026-1509

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