CVE-2026-1745: Medical Certificate Generator CSRF Flaw

CVE-2026-1745 Overview

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in SourceCodester Medical Certificate Generator App version 1.0. This security flaw affects an unknown component of the application and allows remote attackers to perform unauthorized actions on behalf of authenticated users. The vulnerability can be exploited remotely, and proof-of-concept exploit code has been publicly disclosed.

Critical Impact

Attackers can leverage this CSRF vulnerability to perform arbitrary medical certificate deletions by tricking authenticated users into executing malicious requests, potentially compromising the integrity of medical records.

Affected Products

• SourceCodester Medical Certificate Generator App 1.0

Discovery Timeline

• 2026-02-02 - CVE-2026-1745 published to NVD
• 2026-02-03 - Last updated in NVD database

Technical Details for CVE-2026-1745

Vulnerability Analysis

The vulnerability stems from the application's failure to implement proper CSRF protection mechanisms. CSRF vulnerabilities occur when web applications do not validate that requests originate from legitimate user sessions, allowing attackers to craft malicious requests that execute actions with the victim's privileges.

In the case of the Medical Certificate Generator App, the application accepts state-changing requests without verifying the authenticity of the request origin. This allows an attacker to create a malicious webpage or email containing a crafted request that, when visited by an authenticated user, triggers unintended actions such as deleting medical certificates.

Root Cause

The root cause is classified under CWE-352 (Cross-Site Request Forgery). The application fails to implement anti-CSRF tokens or other verification mechanisms to ensure that sensitive operations originate from the legitimate application interface rather than attacker-controlled sources. Without such protection, the server cannot distinguish between legitimate user-initiated requests and forged requests crafted by attackers.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker can exploit this vulnerability by:

1. Crafting a malicious HTML page containing a hidden form or script that submits a request to the vulnerable application
2. Luring an authenticated user to visit the malicious page through phishing or social engineering
3. When the victim loads the page, the malicious request is automatically sent to the application using the victim's authenticated session
4. The application processes the request as legitimate, executing the unauthorized action (such as deleting medical certificates)

The vulnerability has been publicly documented with proof-of-concept code available in the GitHub PoC Repository. For technical details on exploitation, refer to the GitHub CSRF Exploit PoC.

Detection Methods for CVE-2026-1745

Indicators of Compromise

• Unexpected deletion or modification of medical certificate records without corresponding administrative actions
• Web server logs showing DELETE or POST requests to certificate management endpoints from referrer URLs outside the application domain
• User reports of medical certificates disappearing without their knowledge or action

Detection Strategies

• Monitor web application logs for requests to sensitive endpoints that lack valid CSRF tokens or have missing/invalid Referer headers
• Implement alerting for high-volume deletion operations that occur in short time periods
• Review access logs for patterns indicating automated or scripted attacks against certificate management functions

Monitoring Recommendations

• Enable detailed logging for all state-changing operations within the Medical Certificate Generator App
• Configure web application firewall (WAF) rules to detect and block requests with suspicious cross-origin patterns
• Implement anomaly detection for user session activity, particularly focusing on certificate deletion operations

How to Mitigate CVE-2026-1745

Immediate Actions Required

• Restrict access to the Medical Certificate Generator App to trusted internal networks only until patches are available
• Implement network-level controls to limit exposure of the vulnerable application
• Educate users about the risks of clicking unknown links while authenticated to the application
• Consider temporarily disabling certificate deletion functionality if operationally feasible

Patch Information

No official vendor patch has been released at the time of this publication. Organizations should monitor SourceCodester for security updates. Additional vulnerability details and tracking information are available at VulDB #343676.

Workarounds

• Implement a reverse proxy or web application firewall (WAF) with CSRF protection rules in front of the application
• Configure the application server to validate Referer and Origin headers for all state-changing requests
• Require re-authentication for sensitive operations such as certificate deletion
• Deploy browser security headers including SameSite cookie attributes to reduce CSRF attack surface

# Example Apache configuration to enforce Referer header validation
<Location "/certificate/">
    SetEnvIf Referer "^https://yourdomain\.com/" valid_referer
    <RequireAll>
        Require env valid_referer
    </RequireAll>
</Location>