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CVE-2025-53530: DoS Vulnerability in WeGIA Server Due to Unvalidated URL Length

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Overview

WeGIA, a web management platform utilized by various charitable institutions, has been found to possess a severe vulnerability that could potentially expose these organizations to significant cybersecurity risks. This vulnerability, identified as CVE-2025-53530, allows attackers to send excessively long HTTP GET requests, leading to high system resource consumption and potential Denial of Service (DoS) attacks.

Vulnerability Summary

CVE ID: CVE-2025-53530
Severity: High, CVSS 7.5
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage, and system downtime due to DoS attacks

Affected Products

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Product | Affected Versions

WeGIA Server | Versions prior to 3.3.0

How the Exploit Works

The vulnerability arises from insufficient input validation on the WeGIA server. Specifically, the server does not properly validate the length of the ‘errorstr’ parameter in HTTP GET requests. When an excessively long request is received (up to 8,142 characters), the server attempts to process it, leading to significant resource consumption, increased latency, timeouts, and read errors. Ultimately, the server becomes susceptible to DoS attacks, where an attacker could effectively overwhelm and disable the server by repeatedly sending such long requests.

Conceptual Example Code

An attacker might exploit the vulnerability by sending an HTTP GET request similar to the below:

GET /vulnerable/path?errorstr=[8,142 characters of data] HTTP/1.1
Host: target.example.com

The above request would cause the server to consume excessive resources, resulting in latency, timeouts, and potentially a DoS situation.

Mitigation Guidance

Users are advised to apply the vendor patch immediately, upgrading their WeGIA server to version 3.3.0 or later. In situations where immediate patching is not feasible, users can employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure to detect and block excessively long HTTP GET requests.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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