CVE-2026-19802: CWE-862 Missing Authorization in stylemix Checkout Custom Fields Builder for WooCommerce
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.
CVSS v3.1
4.3medium
Affected software
stylemix
Checkout Custom Fields Builder for WooCommerce
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19802 is an authorization bypass vulnerability (CWE-862) in the Checkout Custom Fields Builder for WooCommerce plugin for WordPress, affecting all versions up to and including 1.1.5. The plugin fails to properly verify that a user is authorized to perform certain actions. Authenticated attackers with subscriber-level privileges can exploit this by harvesting a nonce emitted on admin pages accessible to subscribers when WooCommerce is inactive. This allows them to install and activate arbitrary attacker-hosted plugins, resulting in remote code execution on the server.
Potential Impact
An attacker with subscriber-level access can bypass authorization controls to install and activate arbitrary plugins, leading to remote code execution on the affected server. This elevates the attacker's privileges significantly beyond their intended scope, potentially compromising the entire WordPress installation and underlying server.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch is currently documented. Until a patch is available, restrict subscriber-level access and monitor for suspicious plugin installations. Avoid leaving WooCommerce inactive if possible, as the nonce exposure occurs in that state.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 08/13/2026
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa105bbacd9273b49eab2d4
Added to database: 09/09/2026, 07:07:39 UTC
Last enriched: 09/09/2026, 07:22:37 UTC
Last updated: 10/24/2026, 08:45:10 UTC
Views: 75
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