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CVE-2026-19802— Checkout Custom Fields Builder for WooCommerce <= 1.1.5 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation via 'plugin' Parameter

Quick assessment

Affected
stylemix Checkout Custom Fields Builder for WooCommerce
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.

用于 WordPress 的 WooCommerce Checkout Custom Fields Builder 插件在 1.1.5 及之前的所有版本中,由于未正确验证用户是否有权执行特定操作,存在授权绕过(Authorization Bypass)漏洞。 这意味着任何拥有订阅者(subscriber)级别及以上权限的已认证攻击者,可以安装并激活一个由攻击者托管的任意插件,从而在服务器上实现远程代码执行(Remote Code Execution, RCE)。 该漏洞利用了以下事实:当 WooCommerce 处

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-19802

Vulnerability Information

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Vulnerability Title
Checkout Custom Fields Builder for WooCommerce <= 1.1.5 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation via 'plugin' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Checkout Custom Fields Builder for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to install and activate an arbitrary attacker-hosted plugin, resulting in remote code execution on the server. The required nonce is emitted inline on all admin pages accessible to subscribers when WooCommerce is inactive, meaning any subscriber-level user can harvest it and trigger the exploit without any additional privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
stylemix Checkout Custom Fields Builder for WooCommerce 0 ~ 1.1.5 -

II. Public POCs for CVE-2026-19802

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III. Intelligence Information for CVE-2026-19802

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Patches & Fixes for CVE-2026-19802 (2)

Security Blog Posts for CVE-2026-19802 (1)

Vendor Pages for CVE-2026-19802 (2)

Other References for CVE-2026-19802 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2026-19802

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