CVE-2025-69166: Gunslinger Path Traversal Vulnerability

CVE-2025-69166 Overview

CVE-2025-69166 is an unauthenticated Local File Inclusion (LFI) vulnerability affecting the Gunslinger WordPress theme in versions 1.7 and earlier. The flaw allows remote attackers to include arbitrary local files through the vulnerable theme without requiring authentication. The vulnerability is categorized under [CWE-98], improper control of filename for include/require statement in PHP. Successful exploitation can lead to disclosure of sensitive server files, execution of attacker-controlled PHP, and full compromise of the underlying WordPress installation.

Critical Impact
Unauthenticated remote attackers can include arbitrary local files on the WordPress server, leading to source code disclosure, configuration leakage, and potential remote code execution.

Affected Products

Gunslinger WordPress theme versions 1.7 and earlier
WordPress installations using the vulnerable Gunslinger theme
Any hosting environment running affected theme versions

Discovery Timeline

2026-06-17 - CVE-2025-69166 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-69166

Vulnerability Analysis

The Gunslinger theme contains a PHP Remote File Inclusion weakness classified under [CWE-98]. The theme passes user-supplied input into a PHP include, require, or equivalent file-loading statement without sufficient validation. Because authentication is not required, any unauthenticated network attacker can reach the vulnerable endpoint.

Attackers exploiting LFI flaws typically read sensitive files such as wp-config.php, which exposes database credentials, authentication keys, and salts. Once these secrets are obtained, lateral movement into the database and broader infrastructure becomes feasible. In some configurations, LFI can be escalated to remote code execution through log poisoning, session file inclusion, or PHP wrappers such as php://filter and php://input.

The high attack complexity reflected in the scoring suggests conditions such as specific request crafting or environmental constraints are required, but the impact on confidentiality, integrity, and availability remains severe when conditions are met.

Root Cause

The root cause is insufficient sanitization of a filename or path parameter before it reaches a PHP file inclusion function. The theme trusts attacker-controlled input to construct file paths, enabling path traversal sequences such as ../ to escape the intended directory.

Attack Vector

The vulnerability is exploited over the network without authentication or user interaction. An attacker sends a crafted HTTP request to a vulnerable Gunslinger theme endpoint, supplying a manipulated path parameter that resolves to an arbitrary local file. The server then reads or executes the targeted file in the context of the PHP process.

For technical specifics, see the Patchstack WordPress Vulnerability advisory.

Detection Methods for CVE-2025-69166

Indicators of Compromise

HTTP requests to Gunslinger theme paths containing traversal sequences such as ../, ..%2f, or encoded null bytes
Requests referencing sensitive files including wp-config.php, /etc/passwd, or PHP session files
Use of PHP stream wrappers like php://filter/convert.base64-encode/resource= in query parameters
Unexpected outbound connections or new PHP files created in the wp-content/themes/gunslinger/ directory

Detection Strategies

Inspect web server access logs for suspicious query parameters targeting theme files in /wp-content/themes/gunslinger/
Deploy Web Application Firewall (WAF) rules to flag path traversal patterns and PHP wrapper schemes
Correlate file read events on wp-config.php with originating HTTP requests to identify exploitation attempts

Monitoring Recommendations

Monitor PHP error logs for include or require warnings referencing unexpected paths
Alert on file integrity changes within WordPress theme and plugin directories
Track anomalous read access to configuration files by the web server user account

How to Mitigate CVE-2025-69166

Immediate Actions Required

Disable or remove the Gunslinger theme until a patched version is confirmed available
Audit web server logs for prior exploitation attempts targeting the theme
Rotate WordPress secrets, database credentials, and administrator passwords if compromise is suspected
Apply WAF rules blocking path traversal and LFI payloads against WordPress endpoints

Patch Information

No vendor patch information is published in the NVD record at the time of writing. Refer to the Patchstack advisory for the latest remediation guidance and any released updates beyond version 1.7.

Workarounds

Switch to an alternative, actively maintained WordPress theme until a fixed release is available
Restrict access to WordPress theme directories using web server access controls
Configure PHP open_basedir and disable_functions to limit file inclusion scope and dangerous functions
Deploy virtual patching via WAF rules from Patchstack or equivalent providers covering CVE-2025-69166

bash

# Example Nginx rule to block common LFI payloads against the Gunslinger theme
location ~* /wp-content/themes/gunslinger/ {
    if ($args ~* "(\.\./|php://|/etc/passwd|wp-config)") {
        return 403;
    }
}