CVE-2025-67615: Myour Theme PHP File Inclusion Flaw

CVE-2025-67615 Overview

CVE-2025-67615 is a Local File Inclusion (LFI) vulnerability affecting the Myour WordPress theme developed by bslthemes. The vulnerability stems from improper control of filename parameters used in PHP include/require statements, classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). This weakness allows attackers to manipulate file path inputs to include arbitrary local files from the server's filesystem.

Critical Impact

Successful exploitation of this Local File Inclusion vulnerability could allow attackers to read sensitive configuration files, access database credentials, or potentially escalate to remote code execution through log poisoning or other chained attack techniques.

Affected Products

• bslthemes Myour WordPress Theme versions up to and including 1.5.1
• WordPress installations running vulnerable Myour theme versions

Discovery Timeline

• 2026-01-22 - CVE CVE-2025-67615 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-67615

Vulnerability Analysis

This vulnerability exists due to insufficient input validation when handling file inclusion operations within the Myour WordPress theme. The application fails to properly sanitize user-controlled input before passing it to PHP's include() or require() functions, enabling Local File Inclusion attacks.

When exploited, attackers can traverse directory structures using sequences like ../ to access files outside the intended directory scope. This can expose sensitive server files including wp-config.php (containing database credentials), .htaccess files, or system files like /etc/passwd on Unix-based systems.

The vulnerability is particularly concerning in WordPress environments where configuration files contain plaintext database credentials and authentication keys that could be leveraged for further attacks against the underlying infrastructure.

Root Cause

The root cause is improper input validation in the PHP theme code that handles file inclusion operations. User-supplied parameters are passed directly or with inadequate filtering to file inclusion functions, allowing path traversal sequences to escape the intended directory context.

This represents a classic CWE-98 vulnerability pattern where developers fail to implement proper whitelisting or sanitization of filename parameters before including them in PHP execution contexts.

Attack Vector

An attacker can exploit this vulnerability by crafting malicious HTTP requests containing path traversal sequences within parameters that are subsequently used in file inclusion operations. The attack does not require authentication in typical exploitation scenarios.

The attacker manipulates the vulnerable parameter to include sequences like ../../../ followed by the path to a target file. For example, targeting wp-config.php to extract database credentials, or /etc/passwd to enumerate system users. Advanced exploitation may chain this LFI with log poisoning techniques to achieve remote code execution by injecting PHP code into accessible log files and then including those logs.

Detection Methods for CVE-2025-67615

Indicators of Compromise

• HTTP requests containing path traversal sequences (../, ..%2f, %2e%2e/) in URL parameters
• Unusual file access patterns in web server logs targeting sensitive configuration files
• Access attempts to files outside the WordPress theme directory structure
• Requests attempting to access /etc/passwd, wp-config.php, or log files through theme endpoints

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block path traversal patterns in HTTP requests
• Monitor WordPress access logs for suspicious parameter values containing directory traversal sequences
• Deploy intrusion detection signatures for LFI attack patterns targeting PHP applications
• Audit theme-related HTTP traffic for anomalous file path references

Monitoring Recommendations

• Enable detailed logging for all requests to WordPress theme assets and endpoints
• Configure alerts for access attempts to sensitive files like wp-config.php from web-facing paths
• Implement file integrity monitoring on critical WordPress configuration files
• Review server access logs regularly for patterns consistent with file inclusion exploitation attempts

How to Mitigate CVE-2025-67615

Immediate Actions Required

• Update the Myour WordPress theme to a patched version (if available from the vendor)
• Temporarily disable or remove the Myour theme if no patch is currently available
• Implement WAF rules to block path traversal attempts against the WordPress installation
• Review server logs for evidence of exploitation attempts and investigate any suspicious activity

Patch Information

Refer to the Patchstack WordPress Theme Vulnerability advisory for the latest patch status and remediation guidance from bslthemes. Users should upgrade to a version newer than 1.5.1 once a security patch is released by the vendor.

Workarounds

• Deploy a web application firewall with rules blocking common LFI patterns including ../, encoded traversal sequences, and null byte injections
• Restrict PHP file inclusion paths using open_basedir configuration to limit accessible directories
• Implement strict input validation on the application level using allow-lists for acceptable file names
• Consider switching to an alternative WordPress theme until an official patch is released

# Configuration example - Apache .htaccess rule to block path traversal
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.\\) [NC,OR]
RewriteCond %{QUERY_STRING} (\.\.%2f|\.\.%5c) [NC]
RewriteRule .* - [F,L]

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