CVE-2025-68545: Nika WordPress Theme LFI Vulnerability

CVE-2025-68545 Overview

CVE-2025-68545 is a Local File Inclusion (LFI) vulnerability affecting the Nika WordPress theme developed by thembay. This vulnerability stems from improper control of filename for include/require statements in PHP programs, allowing attackers to include local files from the server filesystem through manipulated input parameters.

The vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), which can enable attackers to read sensitive configuration files, access credentials, or potentially escalate to remote code execution if combined with other techniques such as log poisoning or file upload vulnerabilities.

Critical Impact

Attackers can exploit this LFI vulnerability to read sensitive files on the server, potentially exposing database credentials, WordPress configuration details, and other confidential information that could lead to complete site compromise.

Affected Products

• Nika WordPress Theme version 1.2.14 and earlier
• All WordPress installations running vulnerable Nika theme versions

Discovery Timeline

• 2026-02-20 - CVE-2025-68545 published to NVD
• 2026-02-20 - Last updated in NVD database

Technical Details for CVE-2025-68545

Vulnerability Analysis

This Local File Inclusion vulnerability exists due to insufficient input validation in the Nika WordPress theme. The vulnerability allows an attacker to manipulate file path parameters that are subsequently used in PHP include, require, include_once, or require_once statements without proper sanitization.

When exploited, an attacker can traverse the filesystem using path traversal sequences (such as ../) to include arbitrary local files. This can expose sensitive server-side files including wp-config.php, /etc/passwd, log files, and other configuration files containing credentials or sensitive information.

The exploitation potential depends on server configuration and the specific implementation of the vulnerable code path. In certain configurations, if file upload functionality exists or if log files can be poisoned, this LFI vulnerability could be chained with other techniques to achieve remote code execution.

Root Cause

The root cause of this vulnerability is the failure to properly sanitize user-controlled input before using it in PHP file inclusion functions. The theme does not adequately validate or filter filename parameters, allowing directory traversal sequences and arbitrary file paths to be processed by the PHP interpreter.

Secure coding practices require strict validation of all file paths, implementation of allowlists for permitted files, and use of basename functions to strip directory components from user input.

Attack Vector

The attack is initiated through web requests to the WordPress installation running the vulnerable Nika theme. An attacker crafts malicious requests containing path traversal sequences within parameters that are processed by vulnerable PHP include statements.

The attacker does not require authentication to exploit this vulnerability in typical configurations, making it accessible to any remote attacker who can reach the WordPress installation. The exploitation involves manipulating URL parameters or POST data to include unintended local files.

A typical exploitation pattern involves traversing directories to access sensitive files such as WordPress configuration files (wp-config.php) which contain database credentials, or system files on the underlying server. For detailed technical information, see the Patchstack WordPress Theme Vulnerability advisory.

Detection Methods for CVE-2025-68545

Indicators of Compromise

• Unusual HTTP requests containing path traversal sequences (../, ..%2f, %2e%2e/) in URL parameters
• Web server access logs showing requests attempting to access system files like /etc/passwd or wp-config.php
• Unexpected file access patterns in PHP error logs referencing files outside the theme directory
• Multiple failed or successful attempts to access sensitive configuration files

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal attempts in request parameters
• Monitor access logs for patterns indicative of LFI exploitation attempts including encoded directory traversal sequences
• Deploy file integrity monitoring on critical WordPress configuration files
• Use WordPress security plugins capable of detecting exploitation attempts against known theme vulnerabilities

Monitoring Recommendations

• Enable detailed logging for PHP include/require operations where possible
• Configure alerting for access attempts to sensitive files such as wp-config.php from web requests
• Monitor for unusual patterns in web server error logs that may indicate exploitation attempts
• Implement centralized log collection to correlate potential attack indicators across multiple systems

How to Mitigate CVE-2025-68545

Immediate Actions Required

• Update the Nika WordPress theme to a patched version if available from the vendor
• If no patch is available, consider temporarily deactivating the Nika theme and switching to a secure alternative
• Implement WAF rules to block path traversal attempts targeting your WordPress installation
• Review server access logs for signs of previous exploitation attempts
• Audit file permissions to ensure sensitive files are not world-readable

Patch Information

Organizations should check for theme updates through the WordPress admin dashboard or the theme vendor's official channels. The vulnerability affects Nika theme versions through 1.2.14, and users should upgrade to any version released after this vulnerability disclosure that addresses the LFI issue.

For the latest patch information and vulnerability details, consult the Patchstack WordPress Theme Vulnerability advisory.

Workarounds

• Deploy a Web Application Firewall with rules to block directory traversal patterns (../, encoded variants)
• Restrict PHP open_basedir to limit which directories PHP can access on the server
• Implement ModSecurity or similar WAF with OWASP Core Rule Set to filter malicious requests
• Consider using a virtual patching solution until an official vendor patch is available

# Example ModSecurity rule to block LFI attempts
SecRule REQUEST_URI "@contains ../" "id:1001,phase:1,deny,status:403,msg:'Path traversal attempt blocked'"
SecRule REQUEST_FILENAME "@contains ../" "id:1002,phase:1,deny,status:403,msg:'LFI attempt blocked'"

# Example PHP open_basedir restriction in php.ini
# open_basedir = /var/www/html:/tmp