CVE-2025-26616: Wegia Path Traversal Vulnerability

CVE-2025-26616 Overview

A critical Path Traversal vulnerability has been discovered in WeGIA, an open source Web Manager for Institutions with a focus on Portuguese language users. The vulnerability exists in the exportar_dump.php endpoint, allowing attackers to gain unauthorized access to sensitive information stored in configuration files. Specifically, attackers can access config.php, which contains database credentials and connection information that could enable direct database access.

Critical Impact

This path traversal vulnerability allows unauthenticated remote attackers to read sensitive configuration files containing database credentials, potentially leading to complete database compromise.

Affected Products

• WeGIA versions prior to 3.2.14
• WeGIA Web Manager installations with exposed exportar_dump.php endpoint

Discovery Timeline

• February 18, 2025 - CVE-2025-26616 published to NVD
• February 28, 2025 - Last updated in NVD database

Technical Details for CVE-2025-26616

Vulnerability Analysis

This vulnerability is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), commonly known as Path Traversal or Directory Traversal. The exportar_dump.php endpoint in WeGIA fails to properly sanitize user-supplied input, allowing attackers to traverse directory structures and access files outside the intended web root.

The exploitation requires no authentication and can be performed remotely over the network. The attack complexity is low, meaning no special conditions or circumstances are required for successful exploitation. The impact is severe, affecting confidentiality, integrity, and availability of both the vulnerable system and potentially connected systems through exposed database credentials.

Root Cause

The root cause of this vulnerability lies in insufficient input validation within the exportar_dump.php endpoint. The application fails to properly sanitize or validate file path parameters before processing file operations. This allows attackers to use directory traversal sequences (such as ../) to escape the intended directory and access arbitrary files on the server, including the sensitive config.php file.

Attack Vector

The attack is network-based and requires no user interaction or prior authentication. An attacker can craft a malicious HTTP request to the exportar_dump.php endpoint containing path traversal sequences to read the contents of config.php. This file typically contains:

• Database host, username, and password
• Database name and connection parameters
• Application configuration secrets

Once obtained, these credentials can be used to directly access the database, potentially leading to data theft, modification, or destruction.

The vulnerability mechanism involves manipulating file path parameters in requests to the exportar_dump.php endpoint. By including directory traversal sequences in the request, an attacker can navigate up the directory tree and access config.php, which contains sensitive database connection information. For detailed technical information, refer to the GitHub Security Advisory.

Detection Methods for CVE-2025-26616

Indicators of Compromise

• HTTP requests to exportar_dump.php containing path traversal sequences such as ../, ..%2f, or URL-encoded variations
• Web server logs showing access to exportar_dump.php with suspicious query parameters referencing config.php
• Unexpected database connections from unauthorized IP addresses
• Evidence of config.php contents being accessed or exfiltrated

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block requests containing path traversal patterns targeting exportar_dump.php
• Monitor web server access logs for requests to exportar_dump.php with anomalous parameters
• Deploy intrusion detection systems (IDS) with signatures for directory traversal attacks against WeGIA installations
• Enable database audit logging to detect unauthorized access attempts using potentially compromised credentials

Monitoring Recommendations

• Review web server logs for requests to the exportar_dump.php endpoint, particularly those containing encoded characters or traversal sequences
• Monitor for changes to config.php file access times and permissions
• Set up alerts for database connections from unexpected sources or using credentials that may have been exposed
• Implement file integrity monitoring on sensitive configuration files

How to Mitigate CVE-2025-26616

Immediate Actions Required

• Upgrade WeGIA to version 3.2.14 or later immediately, as this version contains the security fix
• If immediate upgrade is not possible, restrict access to the exportar_dump.php endpoint at the web server level
• Rotate database credentials after upgrading to ensure any potentially exposed credentials are invalidated
• Review database access logs to identify any unauthorized access that may have occurred prior to patching

Patch Information

The vulnerability has been addressed in WeGIA version 3.2.14. All users are strongly advised to upgrade to this version or later. The security fix is documented in the GitHub Security Advisory GHSA-xxqg-p22h-3f32.

Workarounds

• No official workarounds are available for this vulnerability according to the vendor advisory
• As a temporary measure, consider blocking access to exportar_dump.php at the web server or reverse proxy level until the patch can be applied
• Implement network-level access controls to limit exposure of the WeGIA application to trusted networks only

# Example: Block access to vulnerable endpoint in Apache (temporary measure until patching)
# Add to .htaccess or Apache configuration
<Files "exportar_dump.php">
    Require all denied
</Files>