Horizon Alert
Summary of the vulnerability and why it matters
A flaw in VerySecureApp, built with Mendix Studio Pro, could allow anyone to see all stored data. This happens because the app incorrectly gives anonymous users access to records, even without specific permissions. The issue stems from how Mendix Studio Pro versions up to 11.8.0 Beta handle user roles.
- Anonymous users can access all data.
- This could lead to significant data exposure.
- The impact is amplified because it's easily reachable.
Attack Path
How an attacker could exploit the issue
An unauthenticated attacker can exploit this vulnerability by simply accessing the affected web application. The flaw allows anonymous users to bypass authorization checks, granting them access to all stored records within the application's MyFirstModule. This occurs because the anonymous user role incorrectly inherits access rights, despite no explicit configuration.
- Publicly exposed Mendix entity.
- Anonymous user role with inherited access.
- No explicit access rights configured.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Mendix Studio Pro allows anonymous users to access all stored data due to an authorization misconfiguration. Attackers are likely to weaponize this because it provides direct, unauthenticated access to sensitive information on public-facing applications. The broad impact and ease of exploitation make it an attractive target.
- Publicly accessible web application.
- No authentication required for exploitation.
- Direct access to stored data.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Prioritize isolating or taking offline any Mendix Studio Pro 11.8.0 Beta services that expose data to anonymous users, as this critical vulnerability allows unauthenticated data exposure and is actively exploited. Immediate containment is necessary until a patch or effective mitigation can be applied.
- Update Mendix Studio Pro.
- Restrict anonymous user data access.
- Monitor for unauthorized data access.
