CVE-2025-4414: 
WordPress vulnerability analysis and mitigation

CVE-2025-4414 is a PHP Local File Inclusion (LFI) vulnerability in the CMSMasters Content Composer WordPress plugin affecting all versions prior to 2.5.7. The flaw stems from improper control of filenames used in PHP include/require statements (CWE-98), allowing unauthenticated remote attackers to include arbitrary local files. It was reported by security researcher "Bonds" on June 8, 2025, and published by Patchstack on July 1, 2025. The vulnerability carries a CVSS v3.1 base score of 8.1 (High) (Patchstack, Red Hat CVE).

The vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), which maps to CAPEC-193 (PHP Remote File Inclusion). The plugin fails to properly sanitize or validate user-supplied input before passing it to PHP file inclusion functions (include/require), enabling an attacker to manipulate the filename parameter to reference arbitrary files on the server's filesystem. Exploitation requires no authentication and no user interaction, though attack complexity is rated High, suggesting some precondition or environmental factor must be met (e.g., specific server configuration or path traversal constraints) (Patchstack, Red Hat CVE).

Successful exploitation allows an attacker to read sensitive files on the server — including configuration files containing database credentials (e.g., WordPress wp-config.php) — potentially leading to complete database takeover. If the included file contains PHP code (e.g., a previously uploaded file), the vulnerability can escalate to arbitrary PHP code execution, compromising the confidentiality, integrity, and availability of the affected WordPress site. The CVSS score reflects high impact across all three pillars, and the network-based attack vector means exploitation can be attempted remotely at scale (Patchstack).

As of the time of publication, there is no public proof-of-concept exploit and no confirmed evidence of in-the-wild exploitation (Red Hat CVE). The EPSS score is approximately 0.0015 (0.15%), indicating a currently low probability of exploitation in the near term. However, Patchstack classifies this as a high-priority vulnerability expected to be targeted in mass-exploit campaigns against WordPress sites, regardless of their traffic or popularity. The vulnerability is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, though it was referenced in a CISA vulnerability bulletin for the week of June 30, 2025 (CISA Bulletin, Patchstack).

1. Reconnaissance: Identify WordPress sites running the CMSMasters Content Composer plugin in versions prior to 2.5.7 using tools like WPScan, Shodan, or Google dorks (e.g., inurl:wp-content/plugins/cmsmasters-content-composer).
2. Identify vulnerable parameter: Locate the plugin endpoint or request parameter that accepts a filename or path value passed to a PHP include/require statement without proper sanitization.
3. Craft LFI payload: Construct a request with a path traversal payload (e.g., ../../../../wp-config.php or ../../../../etc/passwd) targeting the vulnerable parameter to read sensitive server files.
4. Retrieve sensitive data: Submit the crafted request and observe the server response for the contents of the included file, such as database credentials from wp-config.php.
5. Escalate to RCE (if applicable): If the server allows inclusion of previously uploaded files (e.g., images with embedded PHP code), chain the LFI with a file upload to achieve arbitrary PHP code execution (Patchstack).

• Network: Unusual HTTP requests to plugin-related endpoints containing path traversal sequences (e.g., ../, ..%2F, %2e%2e%2f) in query parameters or POST body fields.
• Logs: WordPress or web server access logs showing requests with encoded path traversal patterns targeting CMSMasters Content Composer plugin URLs; HTTP 200 responses to requests containing wp-config, passwd, or other sensitive file names in parameters.
• File System: Unexpected access timestamps on sensitive files such as wp-config.php, /etc/passwd, or other configuration files that do not correspond to legitimate administrative activity.
• Process: Unusual PHP processes spawned from the web server user account; unexpected outbound connections from the web server if LFI is chained with code execution.

The vendor has released version 2.5.7 of the CMSMasters Content Composer plugin, which patches this vulnerability. All users should update immediately to version 2.5.7 or later via the WordPress plugin dashboard. Patchstack users benefit from a virtual patch (mitigation rule) that blocks exploitation attempts until the plugin is updated. As additional hardening measures, administrators should implement strict input validation for file inclusion paths, use allowlists for permitted file paths, apply the principle of least privilege to the web server user, and monitor for unauthorized file access (Patchstack).

Wordfence included CVE-2025-4414 in its weekly WordPress vulnerability report for the period of June 30 to July 6, 2025, highlighting it as a notable plugin vulnerability (Wordfence Blog). The vulnerability was also referenced in the CISA vulnerability summary bulletin for the week of June 30, 2025 (CISA Bulletin). Social media activity was limited, with brief mentions on Mastodon via RedPacketSecurity. Overall community reaction has been measured, consistent with the absence of active exploitation at the time of disclosure.