CVE-2016-20054: Nodcms CSRF Vulnerability

CVE-2016-20054 Overview

Nodcms contains a cross-site request forgery (CSRF) vulnerability that allows attackers to perform unauthorized administrative actions by crafting malicious forms. Attackers can trick authenticated administrators into submitting requests to admin/user_manipulate and admin/settings/generall endpoints to create users or modify application settings without explicit consent.

Critical Impact

Attackers can hijack administrative sessions to create unauthorized user accounts and modify critical application settings, potentially leading to complete system compromise.

Affected Products

• Nodcms (vulnerable versions not specified)

Discovery Timeline

• 2026-04-04 - CVE CVE-2016-20054 published to NVD
• 2026-04-07 - Last updated in NVD database

Technical Details for CVE-2016-20054

Vulnerability Analysis

This Cross-Site Request Forgery vulnerability exists due to the lack of anti-CSRF token validation in critical administrative endpoints within Nodcms. When an authenticated administrator visits a malicious page crafted by an attacker, the browser automatically includes session cookies with requests to the vulnerable endpoints, allowing the attacker's payload to execute with administrative privileges.

The vulnerability affects two primary administrative functions: user management via the admin/user_manipulate endpoint and application configuration via the admin/settings/generall endpoint. Without proper CSRF protections such as synchronizer tokens or SameSite cookie attributes, these endpoints accept and process forged requests that appear legitimate to the server.

Root Cause

The root cause is the absence of CSRF token validation in the Nodcms administrative interface. The application fails to implement anti-CSRF mechanisms such as unique per-session tokens, token verification on state-changing requests, or proper SameSite cookie attributes. This allows attackers to craft HTML forms that, when submitted by an authenticated administrator, execute privileged operations without explicit user consent.

Attack Vector

The attack is network-based and requires user interaction. An attacker crafts a malicious web page containing hidden HTML forms that target the vulnerable Nodcms endpoints. When an authenticated administrator visits the attacker-controlled page (via phishing, social engineering, or injected content), JavaScript or auto-submit functionality causes the victim's browser to send forged requests to the Nodcms installation.

The malicious forms can target admin/user_manipulate to create new administrator accounts, giving the attacker persistent access to the system, or target admin/settings/generall to modify application settings in ways that could further compromise security. For detailed technical information about exploitation techniques, refer to the Exploit-DB entry #40707.

Detection Methods for CVE-2016-20054

Indicators of Compromise

• Unexpected administrator accounts appearing in the Nodcms user database
• Unexplained modifications to application settings in admin/settings/generall
• HTTP request logs showing administrative actions originating from unusual referrer URLs
• Access logs indicating rapid sequential requests to administrative endpoints

Detection Strategies

• Monitor server access logs for POST requests to admin/user_manipulate and admin/settings/generall with external or suspicious Referer headers
• Implement alerting for new user account creation outside of normal administrative workflows
• Deploy web application firewall (WAF) rules to detect cross-origin requests to administrative endpoints
• Review audit logs for administrative changes that coincide with administrator browsing activity on external sites

Monitoring Recommendations

• Enable detailed access logging for all administrative endpoints
• Configure alerts for configuration changes to critical application settings
• Monitor for new user account creation and privilege escalation events
• Implement session activity monitoring to correlate administrative actions with legitimate login sessions

How to Mitigate CVE-2016-20054

Immediate Actions Required

• Implement CSRF tokens on all state-changing administrative forms and validate them server-side
• Configure SameSite=Strict or SameSite=Lax attributes on session cookies
• Audit recent administrative changes for unauthorized modifications
• Review user accounts for any unauthorized entries created via exploitation

Patch Information

No specific vendor patch information is available for this vulnerability. Administrators should check the official Nodcms repository or contact the maintainers for security updates. In the absence of an official patch, manual implementation of CSRF protections is required.

Workarounds

• Manually implement CSRF token generation and validation in the affected administrative controllers
• Add SameSite=Strict attribute to session cookies to prevent cross-origin request submission
• Use browser extensions or policies that restrict third-party cookie usage while performing administrative tasks
• Limit administrative access to trusted networks or require re-authentication for sensitive operations

# Example: Add SameSite attribute to PHP session cookies
# Add to php.ini or application configuration
session.cookie_samesite = "Strict"
session.cookie_secure = true
session.cookie_httponly = true