CVE-2026-1153: technical-laohu mpay CSRF Vulnerability

CVE-2026-1153 Overview

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in technical-laohu mpay versions up to 1.2.4. This vulnerability affects an unspecified function within the application and can be exploited remotely. The lack of proper CSRF protection allows attackers to trick authenticated users into performing unintended actions on the vulnerable application.

Critical Impact

Attackers can perform unauthorized actions on behalf of authenticated users, potentially leading to account compromise, unauthorized transactions, or data modification within the mpay payment system.

Affected Products

• technical-laohu mpay up to version 1.2.4

Discovery Timeline

• 2026-01-19 - CVE-2026-1153 published to NVD
• 2026-01-19 - Last updated in NVD database

Technical Details for CVE-2026-1153

Vulnerability Analysis

This Cross-Site Request Forgery vulnerability exists due to the application's failure to properly validate the origin of requests. When a user is authenticated to the mpay application, an attacker can craft a malicious webpage that, when visited by the victim, will automatically submit requests to the vulnerable application. Since the browser automatically includes session cookies with these requests, the application cannot distinguish between legitimate user actions and forged requests initiated by the attacker.

The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild. Given that mpay appears to be a payment-related application, CSRF vulnerabilities are particularly concerning as they could potentially be leveraged to initiate unauthorized financial transactions.

Root Cause

The root cause of this vulnerability (CWE-352) is the absence or improper implementation of anti-CSRF tokens. Web applications should include unpredictable, session-specific tokens in forms and state-changing requests, then validate these tokens server-side before processing the request. Without this protection, the application cannot verify that a request was intentionally initiated by the authenticated user.

Attack Vector

The attack requires network access and user interaction. An attacker must convince an authenticated user to visit a malicious website or click a crafted link while they have an active session with the vulnerable mpay application. The malicious page contains hidden forms or scripts that automatically submit requests to the target application. Since the victim's browser includes their authentication cookies, the application processes these forged requests as legitimate user actions.

The exploitation mechanism typically involves embedding a hidden form on an attacker-controlled page that targets a sensitive endpoint in the mpay application. When the victim loads this page, JavaScript automatically submits the form, causing the victim's browser to send a state-changing request to the vulnerable application. Technical details and the public exploit can be found in the GitHub Issue #18 vulnerability report.

Detection Methods for CVE-2026-1153

Indicators of Compromise

• Unexpected or unauthorized transactions appearing in user accounts
• Web server logs showing state-changing requests with referrer headers from unknown or suspicious external domains
• User reports of actions they did not perform while their session was active

Detection Strategies

• Monitor HTTP referrer headers for state-changing requests originating from external domains
• Implement logging for all critical operations and review for anomalous patterns
• Deploy web application firewall (WAF) rules to detect potential CSRF attack patterns
• Analyze traffic patterns for automated form submissions from external sources

Monitoring Recommendations

• Enable detailed access logging on the mpay application and review for suspicious cross-origin requests
• Set up alerts for critical actions (transactions, account modifications) with unusual timing or frequency patterns
• Monitor for external referrers on sensitive endpoints that should only receive same-origin requests

How to Mitigate CVE-2026-1153

Immediate Actions Required

• Upgrade technical-laohu mpay beyond version 1.2.4 if a patched version is available
• Implement CSRF token validation on all state-changing endpoints
• Configure SameSite cookie attributes to Strict or Lax to prevent cross-origin cookie transmission
• Review and audit all critical functions for proper CSRF protection

Patch Information

No official vendor patch information is available at this time. Monitor the VulDB entry #341746 for updates on remediation guidance. Organizations using mpay should contact the vendor for information about security updates or implement the workarounds below.

Workarounds

• Implement server-side CSRF token validation using a web application framework's built-in CSRF protection mechanisms
• Add SameSite=Strict or SameSite=Lax attribute to session cookies to prevent cross-site request forgery at the browser level
• Require re-authentication or CAPTCHA verification for sensitive operations
• Use custom request headers (e.g., X-Requested-With) for AJAX requests and validate their presence server-side

# Example: Setting SameSite cookie attribute in Apache configuration
Header always edit Set-Cookie (.*) "$1; SameSite=Strict"

# Example: Nginx configuration for SameSite cookies
proxy_cookie_path / "/; SameSite=Strict";