CVE-2025-67530: 
WordPress vulnerability analysis and mitigation

CVE-2025-67530 is a PHP Local File Inclusion (LFI) vulnerability in the Besa WordPress theme developed by thembay, affecting all versions up to and including 2.3.15. The flaw stems from improper control of filename for include/require statements in PHP (CWE-98). It was reported by researcher João Pedro S Alcântara (Kinorth) on November 20, 2025, and published by Patchstack on December 15, 2025. The vulnerability carries a CVSS v3.1 base score of 7.5 (High) (Patchstack).

The vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). It arises when user-supplied input is passed unsanitized into PHP file inclusion functions (include or require), allowing an attacker to manipulate the file path and force the server to include arbitrary local files. Exploitation requires at least Contributor- or Developer-level privileges (low privilege requirement) and is network-accessible with high attack complexity. The vulnerability is categorized under OWASP Top 10 A3: Injection (Patchstack).

Successful exploitation allows an attacker to read arbitrary local files on the server, potentially exposing sensitive data such as database credentials, WordPress configuration files (wp-config.php), and other confidential server-side files. Depending on server configuration, LFI can be chained with other techniques (e.g., log poisoning) to achieve remote code execution, potentially leading to full compromise of the WordPress site and its underlying server. Confidentiality, integrity, and availability are all rated as HIGH impact (Patchstack).

As of the time of publication, there is no known public proof-of-concept exploit and no evidence of active in-the-wild exploitation (Patchstack). The EPSS score is approximately 0.053%, indicating a low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Patchstack notes that vulnerabilities of this class are sometimes used in mass-exploit campaigns targeting WordPress sites at scale, regardless of site popularity.

1. Reconnaissance: Identify WordPress sites using the Besa theme version 2.3.15 or earlier using tools like WPScan or Shodan, or by inspecting theme metadata in publicly accessible style.css files.
2. Obtain required privileges: Gain at least Contributor- or Developer-level access to the target WordPress site (e.g., via credential stuffing, phishing, or registration if open).
3. Identify vulnerable parameter: Locate the theme functionality that passes user-controlled input to a PHP include or require statement without proper sanitization.
4. Craft malicious payload: Construct a request with a manipulated file path parameter (e.g., using path traversal sequences like ../../../../wp-config.php) targeting the vulnerable include endpoint.
5. Exfiltrate sensitive data: Submit the crafted request and retrieve the contents of sensitive files such as wp-config.php (containing database credentials) or server configuration files.
6. Escalate (optional): Chain the LFI with log poisoning or other techniques to achieve remote code execution and full site compromise (Patchstack).

• Network: Unusual HTTP requests containing path traversal sequences (e.g., ../, ..%2F, %2e%2e%2f) in query parameters or POST body targeting Besa theme endpoints.
• Logs: WordPress or web server access logs showing requests with encoded path traversal patterns or references to sensitive files like wp-config.php, /etc/passwd, or PHP session files.
• File System: Unexpected new files or web shells in the WordPress theme directory (/wp-content/themes/besa/); modification timestamps on theme files that do not align with legitimate updates.
• Process: Unusual PHP processes spawning child processes (e.g., bash, curl, wget) from the web server user account, which may indicate successful code execution following LFI chaining.

The vendor has released a patched version: Besa 2.3.16, which resolves the LFI vulnerability. Site administrators should update the Besa theme to version 2.3.16 or later immediately. As interim mitigations, implement strict input validation and allowlisting for file inclusion parameters, apply the principle of least privilege to WordPress user roles, and consider deploying a Web Application Firewall (WAF) with rules to detect and block path traversal and file inclusion attempts (Patchstack).

Wordfence included CVE-2025-67530 in its weekly WordPress vulnerability report covering December 15, 2025 to January 4, 2026, indicating routine tracking by the WordPress security community (Wordfence). Patchstack, which coordinated the disclosure, classifies the vulnerability as low priority with no impactful threat observed at this time. No significant broader media coverage or notable researcher commentary beyond standard vulnerability database entries has been identified.