CVE-2026-22408: Justicia Theme File Inclusion Vulnerability

CVE-2026-22408 Overview

CVE-2026-22408 is a Local File Inclusion (LFI) vulnerability in the Justicia WordPress theme by Mikado-Themes. The vulnerability stems from improper control of filename parameters used in PHP include/require statements, which allows attackers to include arbitrary local files on the server. This flaw is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program).

Critical Impact

Successful exploitation could allow attackers to read sensitive files, access configuration data, or potentially achieve remote code execution by including malicious files already present on the target system.

Affected Products

• Justicia WordPress Theme version 1.2 and earlier
• Mikado-Themes Justicia (all versions from n/a through 1.2)

Discovery Timeline

• 2026-03-05 - CVE CVE-2026-22408 published to NVD
• 2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-22408

Vulnerability Analysis

This vulnerability exists due to insufficient validation of user-controlled input that is passed to PHP include or require statements within the Justicia WordPress theme. When a web application dynamically includes files based on user input without proper sanitization, attackers can manipulate the file path to include unintended files from the local filesystem.

Local File Inclusion vulnerabilities are particularly dangerous in PHP applications because they can lead to information disclosure of sensitive system files (such as /etc/passwd on Linux systems or wp-config.php in WordPress installations), exposure of application source code, and in some cases, remote code execution when combined with other attack vectors like log poisoning or file upload functionalities.

Root Cause

The root cause of this vulnerability is improper input validation in the PHP code handling file inclusion operations. The Justicia theme fails to adequately sanitize or restrict user-supplied input before using it in include(), require(), include_once(), or require_once() statements. This allows directory traversal sequences (such as ../) to be injected, enabling attackers to navigate outside the intended directory and access arbitrary files on the server.

Attack Vector

The attack can be executed remotely through crafted HTTP requests to the vulnerable WordPress installation. An attacker would typically:

1. Identify a vulnerable parameter that controls file inclusion
2. Inject directory traversal sequences to navigate to sensitive files
3. Include files containing sensitive information or executable PHP code

The vulnerability allows unauthenticated or low-privileged users to potentially access sensitive configuration files, database credentials stored in wp-config.php, or other critical system files. When combined with log file injection or uploaded file inclusion, this vulnerability could escalate to full remote code execution.

Since no verified code examples are available for this vulnerability, readers should consult the Patchstack WordPress Vulnerability Database for detailed technical information about the exploitation mechanism and affected code paths.

Detection Methods for CVE-2026-22408

Indicators of Compromise

• HTTP requests containing directory traversal patterns such as ../, ..%2f, or ..%252f targeting theme files
• Access logs showing attempts to include system files like /etc/passwd, wp-config.php, or php://filter wrappers
• Unusual file access patterns in web server error logs referencing files outside the theme directory
• Requests to theme-related endpoints with suspicious path manipulation characters

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block directory traversal attempts in request parameters
• Implement file integrity monitoring on critical WordPress configuration files
• Configure intrusion detection systems (IDS) to alert on patterns associated with LFI attacks
• Enable verbose logging on WordPress installations and monitor for unusual file inclusion errors

Monitoring Recommendations

• Monitor web server access logs for requests containing path traversal sequences targeting the Justicia theme
• Set up alerts for failed file access attempts or permission denied errors in PHP error logs
• Review WordPress security logs for anomalous behavior patterns around theme file requests
• Implement real-time monitoring for access to sensitive configuration files

How to Mitigate CVE-2026-22408

Immediate Actions Required

• Deactivate and remove the Justicia theme if it is not critical to site operations
• Implement virtual patching through a Web Application Firewall to block LFI attack patterns
• Review server access logs for evidence of exploitation attempts
• Ensure file permissions are properly configured to limit readable files by the web server process

Patch Information

At the time of publication, consult the Patchstack advisory for the latest patch status and remediation guidance from Mikado-Themes. Site administrators should check for available theme updates through the WordPress admin dashboard or contact the theme vendor directly for patched versions.

Workarounds

• Switch to an alternative WordPress theme that is actively maintained and security-audited
• Implement server-level restrictions using .htaccess rules to block directory traversal attempts
• Configure open_basedir in PHP to restrict file access to specific directories
• Use a security plugin with virtual patching capabilities to filter malicious requests

# Example .htaccess rule to block directory traversal
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{QUERY_STRING} (\.\./|\.\.) [NC]
    RewriteRule .* - [F,L]
</IfModule>

# PHP configuration to restrict file inclusion paths
# Add to php.ini or .user.ini
open_basedir = /var/www/html/:/tmp/