CVE-2025-1395: HeyGarson Information Disclosure Flaw

CVE-2025-1395 Overview

CVE-2025-1395 is an Error Message Information Disclosure vulnerability affecting the HeyGarson application developed by Codriapp Innovation and Software Technologies Inc. This vulnerability arises from the generation of error messages containing sensitive information (CWE-209), which can be exploited through fuzzing techniques for application mapping and reconnaissance purposes.

The vulnerability allows unauthenticated remote attackers to gather sensitive application details by triggering verbose error messages that expose internal system information. This information leakage can significantly aid attackers in planning further exploitation attempts against the target system.

Critical Impact

Unauthenticated attackers can remotely extract sensitive application information through verbose error messages, enabling detailed reconnaissance and potential follow-on attacks.

Affected Products

• HeyGarson (through version 30012026)
• Codriapp Innovation and Software Technologies Inc. HeyGarson Application

Discovery Timeline

• 2026-01-30 - CVE-2025-1395 published to NVD
• 2026-02-04 - Last updated in NVD database

Technical Details for CVE-2025-1395

Vulnerability Analysis

This vulnerability falls under CWE-209 (Generation of Error Message Containing Sensitive Information), a class of weaknesses where applications inadvertently expose sensitive details through error messages returned to users. In the case of HeyGarson, the application fails to properly sanitize or suppress detailed error information when unexpected inputs are processed.

When malformed or unexpected requests are sent to the application, it responds with verbose error messages that may include stack traces, database query details, internal file paths, configuration information, or other sensitive technical details. This behavior enables attackers to perform application mapping through fuzzing techniques, systematically probing the application to build a comprehensive understanding of its internal structure and potential attack surfaces.

The network-accessible nature of this vulnerability means that any attacker with network access to the HeyGarson application can exploit it without requiring any authentication or prior access to the system. The impact primarily affects confidentiality, as sensitive information is exposed, with a secondary impact on integrity due to the reconnaissance advantages gained by potential attackers.

Root Cause

The root cause of this vulnerability is improper error handling within the HeyGarson application. Instead of implementing generic error messages for end users while logging detailed information server-side, the application returns verbose error details directly to the client. This design flaw violates secure coding best practices that mandate separation between user-facing error messages and detailed diagnostic information.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability through the following approach:

1. The attacker identifies a network-accessible HeyGarson instance
2. Using fuzzing tools, the attacker sends malformed requests, unexpected parameter values, or boundary condition inputs
3. The application responds with detailed error messages containing sensitive information
4. The attacker collects and analyzes these error messages to map the application's internal structure
5. This reconnaissance data can then be used to identify additional vulnerabilities or plan targeted attacks

Due to the sensitive nature of this vulnerability and the lack of verified code examples, technical exploitation details are not provided. For additional technical information, refer to the USOM Security Notification TR-26-0009.

Detection Methods for CVE-2025-1395

Indicators of Compromise

• Unusual patterns of malformed HTTP requests targeting the HeyGarson application endpoints
• Increased error rate logs showing repeated failed requests from single source IPs
• Sequential requests with incrementally varied parameters indicating automated fuzzing activity
• Network traffic analysis revealing extraction of verbose error responses

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block common fuzzing patterns
• Monitor application logs for unusual error generation rates or patterns
• Implement rate limiting on API endpoints to slow down automated reconnaissance attempts
• Configure intrusion detection systems (IDS) to alert on repeated error-triggering request patterns

Monitoring Recommendations

• Enable detailed logging of all HTTP requests and responses, particularly error responses
• Set up alerting for anomalous spikes in application error rates
• Monitor for sequential requests from single IP addresses that trigger error conditions
• Review access logs regularly for signs of systematic application probing

How to Mitigate CVE-2025-1395

Immediate Actions Required

• Restrict network access to HeyGarson instances to trusted IP ranges where possible
• Implement a web application firewall (WAF) to filter malicious requests and suppress verbose error responses
• Configure error handling to return generic error messages to clients while logging detailed errors server-side
• Deploy rate limiting to slow down potential fuzzing attempts

Patch Information

According to the CVE disclosure, the vendor (Codriapp Innovation and Software Technologies Inc.) was contacted several times regarding the fixing process but did not respond. As of the last modification date (2026-02-04), no official patch has been confirmed. Organizations using HeyGarson should implement the workarounds below and monitor the USOM Security Notification TR-26-0009 for updates.

Workarounds

• Implement a reverse proxy or API gateway to intercept and sanitize error responses before they reach clients
• Configure custom error pages that display generic messages without technical details
• Deploy network-level access controls to limit exposure of the HeyGarson application
• Consider temporarily taking the application offline if it processes sensitive data until vendor response is received

# Example nginx configuration to mask verbose errors
# Add to server block for HeyGarson proxy
proxy_intercept_errors on;
error_page 400 401 403 404 500 502 503 504 /custom_error.html;

location = /custom_error.html {
    internal;
    return 200 '{"error": "An error occurred. Please contact support."}';
    add_header Content-Type application/json;
}