CVE-2025-69150: Medeus Path Traversal Vulnerability

CVE-2025-69150 Overview

CVE-2025-69150 is an unauthenticated Local File Inclusion (LFI) vulnerability affecting the Medeus WordPress theme in versions up to and including 1.14. The flaw allows remote attackers to include and execute arbitrary files on the underlying server without authentication. The issue is classified under CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program, commonly known as PHP Remote File Inclusion. Successful exploitation can lead to disclosure of sensitive files, configuration data, or full remote code execution depending on server configuration.

Critical Impact
Unauthenticated attackers can include arbitrary local files through the Medeus theme, leading to information disclosure and potential remote code execution on affected WordPress sites.

Affected Products

Medeus WordPress theme versions <= 1.14
WordPress installations using the Medeus theme
Web servers hosting vulnerable Medeus theme deployments

Discovery Timeline

2026-06-17 - CVE-2025-69150 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-69150

Vulnerability Analysis

The Medeus theme fails to properly validate or sanitize user-controlled input passed to a PHP include or require statement. An unauthenticated attacker can supply a crafted file path parameter to a vulnerable endpoint exposed by the theme. The PHP interpreter then loads and executes the referenced file within the web application context. Because the affected code path is reachable without authentication, the attack surface extends to any internet-facing WordPress site running Medeus <= 1.14. The vulnerability impacts confidentiality, integrity, and availability, as included files run with the privileges of the PHP process.

Root Cause

The root cause is improper control of filename arguments passed to PHP file inclusion functions, tracked as CWE-98. The theme accepts attacker-controlled values and concatenates them into an include, include_once, require, or require_once call without enforcing an allowlist or restricting path traversal sequences. The absence of authentication checks on the affected handler removes the only remaining barrier to exploitation.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker sends a single HTTP request to the vulnerable Medeus theme endpoint with a manipulated parameter pointing to a local file such as /etc/passwd, wp-config.php, or an attacker-uploaded payload (for example, a poisoned log file or uploaded media). The included file is parsed by PHP, which can result in sensitive data leakage or arbitrary code execution. Technical details and proof-of-concept context are available in the Patchstack advisory for the Medeus theme.

No public exploit code is currently listed for this CVE. The vulnerability mechanism is described in prose only, as no verified proof-of-concept has been released.

Detection Methods for CVE-2025-69150

Indicators of Compromise

HTTP requests to Medeus theme PHP files containing path traversal sequences such as ../, encoded variants (%2e%2e%2f), or null-byte injections.
Web server access logs showing query parameters referencing sensitive files like wp-config.php, /etc/passwd, or /proc/self/environ.
Unexpected PHP include/require warnings in error logs referencing attacker-controlled paths.
Outbound connections initiated by the web server process to unfamiliar hosts shortly after suspicious LFI requests.

Detection Strategies

Deploy web application firewall (WAF) rules that block path traversal patterns and known LFI payloads targeting WordPress themes.
Monitor WordPress installations for usage of the Medeus theme at version <= 1.14 and flag them for immediate review.
Correlate web server access logs with PHP error logs to identify failed or successful file inclusion attempts.

Monitoring Recommendations

Enable verbose logging on all WordPress front-end endpoints and centralize logs for analysis.
Alert on any HTTP request to theme assets containing suspicious query parameters or encoded directory traversal sequences.
Track file integrity on wp-config.php, theme directories, and uploads/ to detect tampering consistent with post-exploitation activity.

How to Mitigate CVE-2025-69150

Immediate Actions Required

Identify all WordPress sites running the Medeus theme at version 1.14 or earlier and prioritize remediation.
Apply the vendor-supplied patch as soon as it is published; consult the Patchstack advisory for the latest fix status.
Restrict access to the WordPress site behind a WAF that blocks LFI patterns until a patched version is deployed.
Audit the server for signs of prior exploitation, including unexpected files in wp-content/uploads/ and modified theme files.

Patch Information

At the time of publication, the Medeus theme version 1.14 and earlier are confirmed vulnerable. Refer to the Patchstack vulnerability database entry for the authoritative patched version and vendor advisory updates. Upgrade to the fixed release once available, or replace the theme with a maintained alternative if no patch is forthcoming.

Workarounds

Disable the Medeus theme and switch to a default WordPress theme until a patched version is available.
Configure PHP with open_basedir restrictions and allow_url_include = Off to limit file inclusion scope.
Deploy WAF signatures that block requests containing directory traversal sequences or references to sensitive system files.
Apply least-privilege filesystem permissions so the PHP process cannot read sensitive files such as wp-config.php outside required paths.

bash

# Example PHP hardening in php.ini
allow_url_include = Off
allow_url_fopen = Off
open_basedir = "/var/www/html:/tmp"

# Example nginx rule to block common LFI patterns
if ($args ~* "(\.\./|%2e%2e|/etc/passwd|wp-config\.php)") {
    return 403;
}