Fix Security Misconfiguration in Cuba

Security misconfigurations in the CUBA Platform (now Jmix) often stem from overly permissive REST API settings and default Spring Security configurations. Leaving anonymous access enabled or wildcarding CORS origins in production environments opens the door for unauthorized data exfiltration and CSRF-style attacks. Hardening the platform requires strict property definition and explicit security bean overrides.

The Vulnerable Pattern

# app.properties - INSECURE CONFIGURATION
cuba.rest.anonymousEnabled = true
cuba.rest.allowedOrigins = *
cuba.rest.tokenMaskingEnabled = false

<security:http pattern=“/rest/” create-session=“stateless”>
<security:intercept-url pattern=”/” access=“permitAll”/>
<security:anonymous enabled=“true”/>
</security:http>

The Secure Implementation

To remediate misconfigurations, first disable 'cuba.rest.anonymousEnabled' to ensure every API call requires a valid OAuth2 token. Replace the wildcard '*' in 'cuba.rest.allowedOrigins' with specific, trusted domains to prevent Cross-Origin Resource Sharing (CORS) abuse. In the Spring Security XML configuration, transition from 'permitAll' to 'isAuthenticated()' for the REST endpoint patterns. Additionally, ensure 'tokenMaskingEnabled' is active to prevent sensitive session tokens from leaking into application logs during debugging or error states.

# app.properties - HARDENED CONFIGURATION
cuba.rest.anonymousEnabled = false
cuba.rest.allowedOrigins = https://app.production-domain.com
cuba.rest.tokenMaskingEnabled = true

<security:http pattern=“/rest/” create-session=“stateless” entry-point-ref=“oauthAuthenticationEntryPoint”>
<security:intercept-url pattern=“/rest/v2/” access=“isAuthenticated()”/>
<security:anonymous enabled=“false”/>
<security:csrf disabled=“false”/>
</security:http>