CVE-2025-69162: Grecko Path Traversal Vulnerability

CVE-2025-69162 Overview

CVE-2025-69162 is an unauthenticated Local File Inclusion (LFI) vulnerability affecting the Grecko WordPress theme in versions 5.17 and earlier. The flaw allows remote attackers to manipulate file path parameters and include arbitrary local files on the underlying server. Successful exploitation can lead to disclosure of sensitive configuration files, source code, and credentials, and may escalate to remote code execution depending on server configuration. The issue is tracked under CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program. No authentication is required to trigger the vulnerable code path.

Critical Impact
Unauthenticated attackers can read arbitrary files on the WordPress host, exposing wp-config.php secrets and potentially enabling further compromise of the site and underlying server.

Affected Products

Grecko WordPress theme versions <= 5.17
WordPress installations bundling the vulnerable Grecko theme
Hosting environments where the Grecko theme is active or available on disk

Discovery Timeline

2026-06-17 - CVE-2025-69162 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-69162

Vulnerability Analysis

The Grecko theme accepts user-controlled input that is passed into a PHP include or require statement without proper sanitization or allowlisting. Because the vulnerable handler is reachable without authentication, any anonymous visitor can supply a crafted path parameter and force the application to load files outside the intended template directory. The defect is classified as CWE-98, covering improper control of filenames used in PHP include statements. Attackers commonly leverage this class of flaw to read wp-config.php, expose database credentials, and harvest WordPress authentication keys. In environments where attackers can also write predictable content to disk, such as uploaded media or log files, LFI frequently escalates to code execution by including attacker-controlled PHP payloads.

Root Cause

The root cause is missing input validation on a request parameter that flows directly into a PHP file inclusion call. The theme does not constrain the resolved path to a known template directory, does not apply a strict allowlist of expected filenames, and does not strip traversal sequences such as ../. Because the vulnerable endpoint requires no authentication, the trust boundary between an anonymous HTTP client and the PHP include subsystem is effectively removed.

Attack Vector

Exploitation occurs over the network against the public-facing WordPress site. An attacker issues an HTTP request to the vulnerable Grecko endpoint with a manipulated path parameter pointing to a sensitive local file. The server resolves the supplied path, includes the target file, and returns its contents or executes it as PHP. No user interaction or prior account is required. Refer to the Patchstack Grecko Theme Vulnerability advisory for additional technical context.

Detection Methods for CVE-2025-69162

Indicators of Compromise

HTTP requests to Grecko theme endpoints containing path traversal sequences such as ../ or URL-encoded variants like %2e%2e%2f.
Access log entries referencing sensitive targets, including wp-config.php, /etc/passwd, or PHP wrappers like php://filter.
Unexpected outbound activity from the web server process following anomalous theme requests.
Web server error logs showing include() or require() warnings referencing unusual file paths.

Detection Strategies

Inspect web access logs for query parameters that resolve to filesystem paths or traversal patterns aimed at Grecko theme files.
Deploy WAF signatures that flag LFI patterns, including php://, data://, and repeated ../ segments in request parameters.
Correlate WordPress theme requests with subsequent reads of wp-config.php content in outbound HTTP responses.
Hunt for sudden spikes in 200-status responses to theme paths from unauthenticated sources.

Monitoring Recommendations

Enable verbose PHP error logging and forward logs to a centralized SIEM for correlation.
Alert on any HTTP response from a WordPress host that contains strings such as DB_PASSWORD, AUTH_KEY, or SECURE_AUTH_KEY.
Monitor file integrity of WordPress theme directories to detect attacker-staged payloads used to chain LFI into code execution.

How to Mitigate CVE-2025-69162

Immediate Actions Required

Identify all WordPress sites running the Grecko theme at version 5.17 or earlier and prioritize them for remediation.
Disable or remove the Grecko theme on hosts where a patched version is not yet available.
Rotate WordPress secrets in wp-config.php, database credentials, and any API keys reachable from the web root.
Restrict access to the WordPress site from untrusted networks while remediation is in progress.

Patch Information

Consult the Patchstack Grecko Theme Vulnerability advisory for the latest patched release of the Grecko theme and upgrade beyond version 5.17. Apply the vendor-provided update across all affected WordPress installations and verify the theme version after upgrade.

Workarounds

Deploy WAF rules that block LFI patterns such as ../, php://filter, and data:// in request parameters targeting Grecko endpoints.
Configure PHP with open_basedir to confine file inclusion to the WordPress installation directory.
Set allow_url_include=Off and allow_url_fopen=Off in php.ini to reduce escalation paths.
Restrict filesystem permissions so the web server user cannot read sensitive files outside the document root where feasible.

bash

# Example php.ini hardening to reduce LFI impact
allow_url_include = Off
allow_url_fopen = Off
open_basedir = "/var/www/html:/tmp"