CVE-2025-68544: Diza WordPress Theme LFI Vulnerability

CVE-2025-68544 Overview

CVE-2025-68544 is a PHP Local File Inclusion (LFI) vulnerability in the thembay Diza WordPress theme. The flaw stems from improper control of filenames used in PHP include or require statements [CWE-98]. Attackers with low-privileged authenticated access can manipulate file path parameters to load arbitrary local PHP files. The vulnerability affects all Diza theme versions up to and including 1.3.15. Successful exploitation can lead to source code disclosure, sensitive data exposure, and potential remote code execution when combined with file upload primitives.

Critical Impact
Authenticated attackers can include arbitrary local PHP files, exposing configuration data and enabling code execution paths within WordPress installations running the vulnerable Diza theme.

Affected Products

thembay Diza WordPress theme versions up to and including 1.3.15
WordPress installations using the vulnerable Diza theme
Sites with low-privileged user registration enabled increase exposure

Discovery Timeline

2025-12-23 - CVE-2025-68544 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-68544

Vulnerability Analysis

The Diza theme contains a PHP file inclusion routine that accepts attacker-influenced input without sufficient validation. When the theme constructs a file path for an include, require, include_once, or require_once statement, user-supplied data flows into the path argument. This allows an authenticated attacker to redirect the inclusion to files outside the intended directory.

Because PHP executes any included file as code, the impact extends beyond information disclosure. Attackers can target log files, session files, or uploaded assets and trigger their execution as PHP. The issue is categorized under [CWE-98], the canonical weakness for PHP Remote File Inclusion and Local File Inclusion flaws.

Root Cause

The root cause is missing or insufficient sanitization of a filename parameter consumed by a PHP file inclusion API. The vulnerable code path does not enforce an allowlist of permitted files, does not normalize directory traversal sequences such as ../, and does not constrain inclusion to a fixed base directory. The combination permits arbitrary local path resolution.

Attack Vector

Exploitation requires network access and a low-privileged authenticated account on the target WordPress site. The attacker sends a crafted HTTP request to the vulnerable theme endpoint, supplying a manipulated file parameter. The server then includes and executes the targeted file. Attack complexity is high, reflecting prerequisites such as predictable target paths or chained primitives needed to escalate from disclosure to code execution.

The vulnerability is described in prose only. See the Patchstack Diza Theme Vulnerability advisory for additional technical context.

Detection Methods for CVE-2025-68544

Indicators of Compromise

HTTP requests to Diza theme endpoints containing directory traversal sequences such as ../ or encoded variants like %2e%2e%2f
Access log entries referencing sensitive paths such as wp-config.php, /etc/passwd, or /proc/self/environ
Unexpected PHP execution originating from uploads or log directories
Authenticated subscriber or contributor accounts issuing repeated requests to theme files

Detection Strategies

Inspect WordPress access logs for parameters whose values resemble file paths or contain path separators
Deploy web application firewall (WAF) rules that block traversal patterns targeting theme endpoints
Compare installed Diza theme version against 1.3.15 using WordPress inventory tooling
Monitor PHP error logs for failed to open stream warnings tied to theme inclusion code

Monitoring Recommendations

Alert on PHP include or require failures referencing non-theme paths
Track creation of new PHP files in writable directories such as wp-content/uploads
Baseline authenticated request patterns and flag low-privileged accounts touching theme files

How to Mitigate CVE-2025-68544

Immediate Actions Required

Identify all WordPress sites running the Diza theme and confirm the installed version
Upgrade the Diza theme to a release later than 1.3.15 once published by thembay
Restrict new user registration or downgrade self-registration privileges until patched
Review WordPress audit logs for suspicious activity from low-privileged accounts

Patch Information

A fixed release beyond version 1.3.15 should be obtained directly from the vendor. Refer to the Patchstack Diza Theme Vulnerability advisory for current patch status and vendor coordination details.

Workarounds

Deploy WAF signatures that block path traversal sequences in query and POST parameters targeting theme files
Set the PHP directive open_basedir to restrict file access to the WordPress root
Disable execution of PHP within wp-content/uploads using web server configuration
Temporarily switch to a different theme if patching is not feasible

bash

# Example nginx rule to block PHP execution in uploads
location ~* /wp-content/uploads/.*\.php$ {
    deny all;
    return 403;
}