CVE-2025-69403: Bravis Addons File Upload Vulnerability

CVE-2025-69403 Overview

CVE-2025-69403 is an Unrestricted Upload of File with Dangerous Type vulnerability affecting the Bravis Addons WordPress plugin developed by Bravis-Themes. This vulnerability allows attackers to upload malicious files to vulnerable WordPress installations, potentially leading to complete site compromise through arbitrary code execution.

The vulnerability stems from inadequate file type validation in the plugin's upload functionality, allowing authenticated attackers with low-level privileges to bypass security restrictions and upload files containing dangerous content such as PHP web shells or other malicious scripts.

Critical Impact

Successful exploitation enables attackers to upload malicious files that can lead to remote code execution, complete website takeover, data theft, and lateral movement within the hosting environment.

Affected Products

• Bravis Addons plugin for WordPress versions through 1.1.9
• WordPress installations with the vulnerable bravis-addons plugin active

Discovery Timeline

• 2026-02-20 - CVE CVE-2025-69403 published to NVD
• 2026-02-25 - Last updated in NVD database

Technical Details for CVE-2025-69403

Vulnerability Analysis

This vulnerability is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type), a critical security weakness that occurs when an application allows users to upload files without properly validating the file type, content, or extension. In the context of the Bravis Addons WordPress plugin, the upload functionality fails to implement adequate security controls to prevent malicious file uploads.

The vulnerability is exploitable over the network and requires only low-level authentication privileges, meaning any authenticated WordPress user (including subscribers) may potentially exploit this issue. The scope of impact extends beyond the vulnerable component itself, as successful exploitation can affect the confidentiality, integrity, and availability of the entire WordPress installation and potentially the underlying server infrastructure.

Root Cause

The root cause of this vulnerability lies in the Bravis Addons plugin's failure to properly validate and restrict file uploads. Specifically, the plugin does not implement adequate checks for:

• File extension validation against a whitelist of safe extensions
• MIME type verification to ensure uploaded content matches expected file types
• Content inspection to detect malicious code embedded within uploaded files
• Proper sanitization of file names and storage locations

This allows attackers to upload files with executable extensions (such as .php) that can be accessed directly through the web server, enabling arbitrary code execution.

Attack Vector

The attack vector for CVE-2025-69403 involves the following exploitation flow:

1. An attacker obtains or creates a low-privileged WordPress account on a target site
2. The attacker identifies the vulnerable file upload endpoint in the Bravis Addons plugin
3. A malicious file (typically a PHP web shell) is crafted with appropriate headers to bypass any superficial validation
4. The malicious file is uploaded through the vulnerable endpoint
5. The attacker navigates to the uploaded file's location on the server
6. The web server executes the malicious PHP code, granting the attacker remote code execution capabilities

The vulnerability requires network access and low-level authentication but no user interaction, making it particularly dangerous for WordPress sites with open registration enabled.

Detection Methods for CVE-2025-69403

Indicators of Compromise

• Unexpected PHP files appearing in WordPress upload directories (typically wp-content/uploads/)
• Suspicious file uploads with mismatched extensions and MIME types in web server access logs
• Web shells or backdoor files with common patterns (e.g., eval(), base64_decode(), system(), exec())
• Unusual outbound network connections from the web server
• Modified WordPress core files or database entries indicating post-exploitation activity

Detection Strategies

• Implement file integrity monitoring on WordPress directories to detect unauthorized file additions
• Monitor web server access logs for requests to unusual PHP files in upload directories
• Deploy web application firewalls (WAF) with rules to detect file upload attacks and web shell patterns
• Utilize endpoint detection and response (EDR) solutions to identify malicious process execution on web servers
• Conduct regular security scans of WordPress installations to identify vulnerable plugins

Monitoring Recommendations

• Enable verbose logging for file upload operations and monitor for anomalies
• Configure alerts for new PHP file creation in upload directories
• Monitor authentication logs for unusual login patterns from low-privileged accounts
• Implement network traffic analysis to detect command and control communications
• Set up automated vulnerability scanning to identify outdated or vulnerable WordPress plugins

How to Mitigate CVE-2025-69403

Immediate Actions Required

• Disable or deactivate the Bravis Addons plugin immediately until a patched version is available
• Audit WordPress upload directories for any suspicious or unauthorized files
• Review user accounts and remove any unnecessary low-privileged accounts
• Implement additional server-level file upload restrictions as a defense-in-depth measure
• Consider implementing a web application firewall to block malicious upload attempts

Patch Information

As of the last NVD update on 2026-02-25, affected users should check the Patchstack Vulnerability Analysis for the latest information on available patches. Users running Bravis Addons version 1.1.9 or earlier should update to a patched version as soon as one becomes available from the vendor.

Workarounds

• Disable the Bravis Addons plugin entirely until a security patch is released
• Implement server-level file upload restrictions using .htaccess rules to prevent PHP execution in upload directories
• Use a security plugin to restrict file upload capabilities for low-privileged users
• Configure web server settings to deny execution of PHP files in upload directories
• Consider implementing a content security policy and strict file type validation at the server level

# Apache .htaccess example to prevent PHP execution in uploads directory
# Place this file in wp-content/uploads/

<Files "*.php">
    Order Deny,Allow
    Deny from all
</Files>

# Alternative using FilesMatch for multiple dangerous extensions
<FilesMatch "\.(php|phtml|php3|php4|php5|php7|phps|cgi|pl|asp|aspx|shtml|shtm|htaccess|phar)$">
    Order Deny,Allow
    Deny from all
</FilesMatch>