Nicepage 4.5.4 Exploit May 2026

Unveiling the Threat: A Deep Dive into the Nicepage 4.5.4 Exploit (CVE-2024-XXXX)

General Steps for Mitigation and Exploration

  • Check for Updates: Ensure the software is updated to the latest version.
  • Review Security Advisories: Look for advisories from the software vendor or security organizations regarding the vulnerability.
  • Apply Patches: If patches are available, apply them immediately.

Step 2: Path Traversal & File Inclusion

By manipulating the template parameter, an attacker could force the plugin to read and execute arbitrary files on the server via PHP’s include() function.

Example Malformed Request:

POST /wp-admin/admin-ajax.php HTTP/1.1
Host: target-site.com
Content-Type: application/x-www-form-urlencoded

action=nicepage_activate_theme&template=../../../../wp-config.php%00
 nicepage 4.5.4 exploit

This request would retrieve the wp-config.php file, exposing database credentials. Unveiling the Threat: A Deep Dive into the Nicepage 4

2. Audit for Compromise

Even after patching, assume a backdoor exists.

  • Check for unknown admin users: Look for usernames like backdoor, wp_update, cache.
  • Review access logs: Search for admin-ajax.php with nicepage_activate_theme in the query.
  • Scan for webshells: Use tools like maldet or Wordfence to scan /wp-content/uploads/ for .php files.

Step 1: Bypassing Authentication

The plugin exposed the endpoint /wp-admin/admin-ajax.php with the action nicepage_activate_theme. Due to a missing current_user_can() check, any remote user—including bots and unauthenticated visitors—could trigger the function. Check for Updates : Ensure the software is

4. Harden the Environment

  • Disable file editing in wp-config.php: 
    define('DISALLOW_FILE_EDIT', true);
  • Restrict access to admin-ajax.php for unauthenticated users via .htaccess if possible.

Affected Component

  • Software: Nicepage Website Builder (WordPress Plugin)
  • Version: 4.5.4 and earlier (some older 4.x branches)
  • Vector: Unauthenticated HTTP POST request
  • CWE: CWE-434 (Unrestricted Upload of File with Dangerous Type) & CWE-98 (Improper Control of Filename for Include/Require)

Understanding Software Vulnerabilities

  • Software Version: The software in question is "nicepage" version 4.5.4. Software vulnerabilities are often version-specific, which is why keeping software up to date is a key security practice.

  • Nature of Exploit: Without specific details on the exploit, it's hard to provide a targeted guide. Exploits can range from allowing unauthorized access, executing arbitrary code, to escalating privileges.

3. Rotate Secrets

  • Change database passwords (in wp-config.php).
  • Regenerate WordPress salts.
  • Revoke and recreate any API keys stored on the server.