Vulnerabilities

Deserialization of Untrusted Data vulnerability in wpeverest Everest Forms - Frontend Listing everest-forms-frontend-listing allows Object Injection.This issue affects Everest Forms - Frontend Listing: from n/a through <= 1.0.5.

The Everest Forms (Pro) plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_entry_files() function in all versions up to, and including, 1.9.4. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The vulnerability requires an admin to trigger the deletion via deletion of a form entry and cannot be carried out by the attacker alone.

The Everest Forms WordPress plugin before 3.0.3.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Cross Site Scripting vulnerability in WPEVEREST Everest Forms before 3.0.9 allows an attacker to execute arbitrary code via a file upload.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration allows Reflected XSS.This issue affects User Registration: from n/a through < 4.2.0.

The User Registration & Membership WordPress plugin before 4.1.3 does not properly validate data in an AJAX action when the Membership Addon is enabled, allowing attackers to authenticate as any user, including administrators, by simply using the target account's user ID.

The User Registration & Membership WordPress plugin by WPEverest, prior to version 4.1.2, fails to prevent users from selecting their own account role during registration when the Membership Addon is enabled. An unauthenticated attacker can submit a registration with the role set to administrator and thereby gain full admin control of the affected WordPress site. The flaw is rated 8.1 (high) with network reachability, no privileges or user interaction required, and high attack complexity because it only triggers under the specific Membership Addon configuration. Any WordPress site running User Registration & Membership before 4.1.2 with the Membership Addon enabled and self-registration open is affected. No confirmed in-the-wild exploitation is reported and it is not in CISA KEV, but a public proof of concept exists and EPSS assigns a roughly 46% probability of exploitation within 30 days (99th percentile).

Do: Upgrade User Registration & Membership to version 4.1.2 or later immediately; as a stopgap, disable the Membership Addon or close self-registration to remove the attack path. After patching, audit the user list for recently created administrator accounts you did not create, since successful exploitation may have gone unnoticed.

The User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.3 via the user_registration_membership_register_member() due to missing validation on the 'membership_id' user controlled key. This makes it possible for unauthenticated attackers to update any user's membership to any other active or non-active membership type.

The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input from the 'field_value' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration allows Stored XSS.This issue affects User Registration: from n/a through <= 4.0.3.

The User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 's' parameter in all versions up to, and including, 4.0.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

CVE-2025-1128 is a critical (CVSS 9.8) unauthenticated arbitrary file upload, read, and deletion flaw in the Everest Forms WordPress plugin (CWE-434), caused by missing file-type and path validation in the 'format' method of the EVF_Form_Fields_Upload class. An attacker with no account and no user interaction can send crafted requests to a site running an affected version to upload files of arbitrary type (potentially including executable PHP scripts), read arbitrary files on the server, or delete arbitrary files. Consequences can include remote code execution, disclosure of sensitive information such as configuration files, or deletion of critical files enabling complete site takeover. All Everest Forms versions up to and including 3.0.9.4 are affected, so any WordPress site running the plugin at one of those versions is in scope. No public proof-of-concept or CISA KEV listing is known at this time, but the 28.8% EPSS score (98th percentile) indicates a high probability of exploitation within the next 30 days.

Do: Upgrade Everest Forms to version 3.0.9.5 or later (anything above 3.0.9.4) as soon as possible. If immediate patching is not possible, deactivate the plugin or remove file-upload fields from published forms, and consider a WAF rule blocking unauthenticated requests to the plugin's upload/AJAX endpoints. After patching, check upload directories (including wp-content/uploads/everest_forms) for unexpected or recently modified files, look for newly created rogue administrator accounts, and verify that core files such as wp-config.php have not been deleted or altered.

The Everest Forms WordPress plugin before 3.0.8.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Missing Authorization vulnerability in WPEverest User Registration allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects User Registration: from n/a through 2.3.2.1.

The Everest Forms WordPress plugin before 3.0.4.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Missing Authorization vulnerability in WPEverest Everest Forms.This issue affects Everest Forms: from n/a through 2.0.3.

The Everest Forms plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.0.7 via the 'font_url' parameter. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

Deserialization of Untrusted Data vulnerability in WPEverest User Registration.This issue affects User Registration: from n/a through 2.3.2.1.

The User Registration – Custom Registration Form, Login Form, and User Profile WordPress Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Display Name' parameter in all versions up to, and including, 3.1.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability requires social engineering to successfully exploit, and the impact would be very limited due to the attacker requiring a user to login as the user with the injected payload for execution.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPEverest Everest Forms – Build Contact Forms, Surveys, Polls, Application Forms, and more with Ease! allows Stored XSS.This issue affects Everest Forms – Build Contact Forms, Surveys, Polls, Application Forms, and more with Ease!: from n/a through 2.0.4.1.

The User Registration WordPress plugin before 3.0.4.2 does not sanitize and escape some of its settings, which could allow high-privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

The User Registration plugin for WordPress is vulnerable to arbitrary file uploads due to a hardcoded encryption key and missing file type validation on the 'ur_upload_profile_pic' function in versions up to, and including, 3.0.2. This makes it possible for authenticated attackers with subscriber-level capabilities or above to upload arbitrary files on the affected site's server which may make remote code execution possible. This was partially patched in version 3.0.2 and fully patched in version 3.0.2.1.

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in WPEverest User Registration plugin <= 2.3.0 versions.

The User Registration WordPress plugin before 2.2.4.1 does not properly restrict the files to be uploaded via an AJAX action available to both unauthenticated and authenticated users, which could allow unauthenticated users to upload PHP files for example.

The Contact Forms - Drag & Drop Contact Form Builder WordPress plugin through 1.0.5 allows high privilege users to download arbitrary files from the web server via a path traversal attack

The Contact Form, Drag and Drop Form Builder for WordPress plugin before 1.8.0 does not escape the status parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue

The User Registration WordPress plugin before 2.0.2 does not properly sanitise the user_registration_profile_pic_url value when submitted directly via the user_registration_update_profile_details AJAX action. This could allow any authenticated user, such as subscriber, to perform Stored Cross-Site attacks when their profile is viewed

A SQL injection vulnerability exists in WPEverest Everest Forms plugin for WordPress through 1.4.9. Successful exploitation of this vulnerability would allow a remote attacker to execute arbitrary SQL commands on the affected system via includes/evf-entry-functions.php