StyleMix Checkout Custom Fields Builder Plugin up to 1.1.5 on WordPress authorization

Summaryinfo

A vulnerability marked as critical has been reported in StyleMix Checkout Custom Fields Builder Plugin up to 1.1.5. Impacted is an unknown function. The manipulation leads to authorization. This vulnerability is referenced as CVE-2026-19802. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in StyleMix Checkout Custom Fields Builder Plugin up to 1.1.5. It has been rated as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-19802 since 08/13/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/09/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• StyleMix

Name

• Checkout Custom Fields Builder Plugin

Version

• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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