buildwps Prevent Direct Access Plugin up to 2.8.8.8 on WordPress get_advance_file_by_url token improper authorization

Summaryinfo

A vulnerability described as problematic has been identified in buildwps Prevent Direct Access Plugin up to 2.8.8.8. This issue affects the function get_advance_file_by_url. Executing a manipulation of the argument token can lead to improper authorization. This vulnerability appears as CVE-2026-3835. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in buildwps Prevent Direct Access Plugin up to 2.8.8.8. It has been declared as problematic. This vulnerability affects the function get_advance_file_by_url. The manipulation of the argument token with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality. CVE summarizes:

The Prevent Direct Access – Protect WordPress Files plugin for WordPress is vulnerable to unauthorized access of protected files due to insufficient token validation in the `get_advance_file_by_url()` method in all versions up to, and including, 2.8.8.8 The method uses a SQL `LIKE` operator for token lookup without escaping wildcard characters via `$wpdb->esc_like()`. This makes it possible for unauthenticated attackers to bypass the private token requirement by supplying SQL wildcard characters (such as `%`) as the token value, matching any record in the plugin's file table and downloading any protected file.

The advisory is available at wordfence.com. This vulnerability was named CVE-2026-3835 since 03/09/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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 08/13/2026). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-57720). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• buildwps

Name

• Prevent Direct Access Plugin

Version

• 2.8.8.0
• 2.8.8.1
• 2.8.8.2
• 2.8.8.3
• 2.8.8.4
• 2.8.8.5
• 2.8.8.6
• 2.8.8.7
• 2.8.8.8

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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