Forfront e-shot Plugin up to 1.0.2 on WordPress AJAX eshot_form_builder_update_field_data authorization

Summaryinfo

A vulnerability was found in Forfront e-shot Plugin up to 1.0.2 on WordPress. It has been declared as critical. This affects the function eshot_form_builder_update_field_data of the component AJAX Handler. The manipulation results in authorization. This vulnerability was named CVE-2026-3642. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Forfront e-shot Plugin up to 1.0.2 on WordPress. Affected is the function eshot_form_builder_update_field_data of the component AJAX Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The e-shot™ form builder plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 1.0.2. The eshot_form_builder_update_field_data() AJAX handler lacks any capability checks (current_user_can()) or nonce verification (check_ajax_referer()/wp_verify_nonce()). The function is registered via the wp_ajax_ hook, making it accessible to any authenticated user. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify form field configurations including mandatory status, field visibility, and form display preferences via the eshot_form_builder_update_field_data AJAX action.

The weakness was presented by Phong Nguyen. The advisory is available at wordfence.com. This vulnerability is traded as CVE-2026-3642 since 03/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/15/2026).

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

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Productinfo

Type

• WordPress Plugin

Vendor

• Forfront

Name

• e-shot Plugin

Version

• 1.0.0
• 1.0.1
• 1.0.2

CPE 2.3info

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CPE 2.2info

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