CVE-2025-13275: PHP Business Website RCE Vulnerability

CVE-2025-13275 Overview

CVE-2025-13275 is an unrestricted file upload vulnerability in the Iqbolshoh php-business-website project. The flaw resides in the /admin/about.php component, which fails to properly validate uploaded files. An authenticated attacker with high privileges can abuse the endpoint remotely over the network. The project follows a rolling release model, so no discrete affected or fixed version numbers are published. The issue is tracked as CWE-284 (Improper Access Control), and a public disclosure containing exploitation details has been released.

Critical Impact
Authenticated attackers can upload arbitrary files through /admin/about.php, potentially placing attacker-controlled content on the web server.

Affected Products

Iqbolshoh php-business-website (rolling release)
Commit reference up to 10677743a8dfc281f85291a27cf63a0bce043c24
Component: /admin/about.php

Discovery Timeline

2025-11-17 - CVE-2025-13275 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-13275

Vulnerability Analysis

The vulnerability affects the administrative file /admin/about.php in the php-business-website project. This endpoint accepts file uploads without enforcing sufficient restrictions on file type, extension, or content. As a result, an attacker who reaches the administrative interface can submit files that the server subsequently stores in web-accessible locations. The weakness is classified under CWE-284, improper access control, because the upload handler does not adequately restrict which resources callers can influence.

Exploitation requires network access and high-privilege authentication, which limits the practical attack surface to users who already hold administrative credentials. However, because the project ships as a rolling release, there are no versioned artifacts against which defenders can pin remediation. Public disclosure of the exploit further increases the likelihood of opportunistic misuse against exposed instances.

Root Cause

The root cause is missing or insufficient validation in the upload handler within /admin/about.php. The application does not enforce an allowlist of permitted MIME types or extensions, and it does not sanitize file names before writing to disk. This allows content that should be rejected — including server-executable PHP files — to be persisted in a directory served by the web application.

Attack Vector

An attacker authenticates to the administrative panel and submits a crafted HTTP POST request to /admin/about.php containing an arbitrary file. Because the handler does not verify file characteristics, the payload is written to the server. If the destination directory permits PHP execution, the attacker can request the uploaded file to achieve code execution in the context of the web server. Full technical details are available in the VulDB entry #332610 and the public proof-of-concept document.

No verified code sample is republished here. Refer to the linked references for the exact request structure used in the public disclosure.

Detection Methods for CVE-2025-13275

Indicators of Compromise

Unexpected files with executable extensions (.php, .phtml, .phar) in upload directories referenced by /admin/about.php.
HTTP POST requests to /admin/about.php containing multipart/form-data payloads with non-image content types.
Web server access logs showing subsequent GET requests to newly created files immediately after an admin upload event.

Detection Strategies

Deploy web application firewall rules that inspect uploads to /admin/about.php and reject requests containing server-executable file types.
Baseline the contents of upload directories and alert on new files with script extensions or MIME mismatches.
Correlate administrative logins with upload activity to identify anomalous or off-hours administrative sessions.

Monitoring Recommendations

Enable verbose logging on the PHP application and web server for all administrative endpoints.
Monitor filesystem events on directories writable by the web server process for creation of new PHP files.
Track authentication events for administrative accounts and alert on logins from unfamiliar network locations.

How to Mitigate CVE-2025-13275

Immediate Actions Required

Restrict network access to /admin/ paths using IP allowlists or a VPN until a fix is applied.
Rotate administrative credentials and enforce multi-factor authentication where supported.
Audit upload directories for files added since the vulnerable commit and remove any unauthorized content.

Patch Information

The project uses a rolling release model, and the vendor has not published discrete patched version numbers. Consult the upstream repository and the VulDB advisory for the latest commit that addresses the flaw. Apply the fix by pulling the current HEAD and redeploying, or by manually adding server-side extension allowlisting and MIME validation to the /admin/about.php upload handler.

Workarounds

Add server-side validation to reject any upload whose extension is not in a strict allowlist such as .jpg, .jpeg, .png, and .gif.
Store uploaded files outside the web root or in a directory configured to disable PHP execution using an .htaccess directive or equivalent server configuration.
Rename uploaded files to a random identifier without preserving the original extension when it is not required for functionality.

bash

# Apache configuration example: disable PHP execution in the uploads directory
<Directory "/var/www/html/uploads">
    php_flag engine off
    <FilesMatch "\.(php|phtml|phar|php5|php7)$">
        Require all denied
    </FilesMatch>
</Directory>