CVE-2025-53430: 
WordPress vulnerability analysis and mitigation

CVE-2025-53430 is a PHP Local File Inclusion (LFI) vulnerability in the AncoraThemes Etta WordPress theme, affecting all versions up to and including 1.14.0. The vulnerability stems from improper control of filename parameters used in PHP include/require statements (CWE-98). It was reported by Tran Nguyen Bao Khanh (VCI - VNPT Cyber Immunity) on August 5, 2025, and published by Patchstack on September 4, 2025. It carries a CVSS v3.1 base score of 8.1 (High), exploitable by unauthenticated remote attackers (Patchstack).

The root cause is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), where user-supplied input is insufficiently validated before being passed to PHP file inclusion functions. This allows an unauthenticated attacker to manipulate the filename parameter to include arbitrary local files from the server's filesystem. The attack vector is network-based with high attack complexity, requiring no privileges or user interaction. No public proof-of-concept code has been disclosed as of the time of reporting (Patchstack).

Successful exploitation allows an attacker to read sensitive local files on the server, including configuration files that may contain database credentials, potentially enabling complete database takeover. Depending on server configuration, LFI vulnerabilities can also be chained with other techniques (e.g., log poisoning) to achieve arbitrary code execution. This threatens the confidentiality, integrity, and availability of the affected WordPress site and its underlying server (Patchstack).

As of the time of disclosure, there is no public proof-of-concept exploit and no evidence of active in-the-wild exploitation. The EPSS score is approximately 0.053%, indicating a low current probability of exploitation. No threat actor attribution has been made, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. However, Patchstack classifies it as high priority and notes that vulnerabilities of this type are commonly used in mass-exploit campaigns targeting WordPress sites (Patchstack).

1. Reconnaissance: Identify WordPress sites using the Etta theme (version ≤ 1.14.0) via web crawlers, Shodan, or WPScan fingerprinting techniques.
2. Identify vulnerable parameter: Locate the theme's PHP file inclusion endpoint where user-controlled input is passed to an include() or require() statement without proper sanitization.
3. Craft malicious request: Send an unauthenticated HTTP request with a manipulated filename parameter pointing to a sensitive local file (e.g., ../../../../wp-config.php or /etc/passwd).
4. Retrieve sensitive data: The server processes the inclusion and returns the contents of the targeted file in the HTTP response, exposing credentials or other sensitive information.
5. Escalate (optional): Use extracted database credentials or other secrets to gain further access to the WordPress admin panel, database, or underlying server (Patchstack).

• Network: Unusual HTTP requests to theme-related PHP endpoints containing path traversal sequences (e.g., ../, ..%2F, %2e%2e%2f) in query parameters or POST body.
• Logs: Web server access logs showing requests with traversal patterns targeting the Etta theme directory; HTTP 200 responses to requests containing file path strings like wp-config.php or /etc/passwd.
• File System: No direct file artifacts expected from read-only LFI, but watch for new files in writable directories if LFI is chained with log poisoning or file upload attacks.
• Process: Unexpected database connection attempts from the web server process using credentials that may have been extracted from wp-config.php (Patchstack).

As of the time of disclosure, no official patch from AncoraThemes is available for the Etta theme. Patchstack has issued a virtual patching/mitigation rule for its subscribers to block exploitation attempts until an official fix is released. Recommended actions include: immediately deploying a Web Application Firewall (WAF) rule to block path traversal patterns; implementing strict input validation and whitelisting for file inclusion paths; restricting web server filesystem permissions; and monitoring for a patched version of the Etta theme beyond 1.14.0 (Patchstack).