CVE-2025-52805: Leyka Path Traversal Vulnerability

CVE-2025-52805 Overview

CVE-2025-52805 is a Path Traversal vulnerability affecting the VaultDweller Leyka WordPress plugin that enables PHP Local File Inclusion (LFI). The vulnerability exists in versions through 3.32.1 and allows attackers to traverse directory structures using specially crafted path sequences (.../...//') to include arbitrary PHP files from the local file system.

Critical Impact

Successful exploitation of this vulnerability could allow attackers to include malicious PHP files, potentially leading to remote code execution, sensitive data disclosure, or complete server compromise on WordPress installations using the vulnerable Leyka plugin.

Affected Products

• VaultDweller Leyka WordPress Plugin versions through 3.32.1
• WordPress installations with Leyka donation plugin enabled
• Web servers hosting vulnerable Leyka plugin installations

Discovery Timeline

• 2025-07-04 - CVE-2025-52805 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-52805

Vulnerability Analysis

This vulnerability is classified under CWE-35 (Path Traversal: '.../...//'). The Leyka WordPress plugin fails to properly sanitize user-supplied input containing path traversal sequences. The unique traversal pattern (.../...//') suggests the plugin may have implemented basic filtering for standard ../ sequences but failed to account for variations that can bypass these checks.

PHP Local File Inclusion vulnerabilities are particularly dangerous in WordPress environments because they can be leveraged to include files containing sensitive configuration data (such as wp-config.php), log files that may contain injected PHP code, or uploaded files controlled by the attacker.

Root Cause

The root cause stems from insufficient input validation and sanitization of file path parameters within the Leyka plugin. The application likely accepts user-controlled input that is used to construct file paths without adequately filtering or normalizing directory traversal sequences. Standard path sanitization may be in place but does not account for the specific .../...//' pattern, allowing attackers to bypass protections.

Attack Vector

The attack is network-based and requires user interaction. An attacker can exploit this vulnerability by crafting malicious HTTP requests containing the path traversal payload. The attack flow typically involves:

1. Identifying an input parameter that accepts file paths in the Leyka plugin
2. Injecting the .../...//' traversal sequence to escape the intended directory
3. Targeting sensitive PHP files or uploaded malicious content for inclusion
4. Achieving code execution or information disclosure when the server processes the included file

The vulnerability allows unauthenticated attackers to potentially read sensitive files or execute arbitrary PHP code, depending on server configuration and available files. For detailed technical information, see the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2025-52805

Indicators of Compromise

• HTTP request logs containing path traversal sequences such as .../...//', ../, or URL-encoded variants (%2e%2e%2f)
• Unusual file access patterns in web server logs targeting files outside the plugin directory
• Access attempts to sensitive files like wp-config.php, /etc/passwd, or log files through the Leyka plugin endpoints
• Error logs showing failed file inclusion attempts or unexpected file path resolutions

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns including .../...//' variations
• Monitor web server access logs for requests containing directory traversal sequences targeting Leyka plugin endpoints
• Deploy file integrity monitoring on critical WordPress files to detect unauthorized access or modifications
• Configure intrusion detection systems to alert on LFI attack signatures and anomalous file access patterns

Monitoring Recommendations

• Enable verbose logging for the Leyka plugin and WordPress core to capture file access attempts
• Set up real-time alerting for requests containing path traversal indicators targeting donation-related endpoints
• Monitor for unusual PHP include/require errors in application logs that may indicate exploitation attempts
• Review server access logs regularly for patterns consistent with directory traversal attacks

How to Mitigate CVE-2025-52805

Immediate Actions Required

• Update the Leyka plugin to a patched version beyond 3.32.1 immediately if available
• Temporarily disable the Leyka plugin if a patch is not available and the functionality is not critical
• Implement WAF rules to block requests containing path traversal sequences targeting the plugin
• Review server logs for evidence of exploitation attempts and investigate any suspicious activity
• Restrict file system permissions to limit the impact of potential LFI attacks

Patch Information

Organizations should monitor the VaultDweller Leyka plugin page and the Patchstack vulnerability database for official patch releases addressing this vulnerability. Update to the latest available version that remediates CVE-2025-52805 as soon as it becomes available.

Workarounds

• Deploy a Web Application Firewall with rules specifically designed to detect and block LFI and path traversal attacks
• Implement PHP configuration hardening by disabling allow_url_include and restricting open_basedir to limit file inclusion scope
• Use WordPress security plugins that provide virtual patching capabilities to protect against known vulnerabilities
• If the plugin is not essential, remove or disable it entirely until an official patch is released

# PHP configuration hardening for LFI mitigation
# Add to php.ini or .htaccess

# Disable URL file inclusion
allow_url_include = Off
allow_url_fopen = Off

# Restrict file operations to WordPress directory
open_basedir = /var/www/html/wordpress/

# Disable dangerous PHP functions
disable_functions = exec,passthru,shell_exec,system,proc_open,popen