Broken Object-Level Access Control in MicroRealEstate PDF Generator

Executive Summary

CVE-2026-57868 is a vulnerability in MicroRealEstate's Client Portal caused by broken object-level access controls in its PDF generator functionality.

Specifically, it is an insecure direct object reference (IDOR) flaw that allows tenants to access and view invoices belonging to other users without proper authorization.

This means that sensitive information such as full names, addresses, and rental terms of other users can be exposed to unauthorized individuals.

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Impact Analysis

This vulnerability can lead to unauthorized disclosure of sensitive personally identifiable information (PII) including full names, addresses, and specific rental terms.

If exploited, tenants could view confidential invoices of other users, potentially leading to privacy breaches and misuse of personal data.

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Mitigation Strategies

The vulnerability is an insecure direct object reference (IDOR) in MicroRealEstate Client Portal versions 1.0.0-alpha3 and earlier, allowing unauthorized access to other users' invoices and sensitive information.

Since no fixed versions have been released yet, immediate mitigation steps include restricting access to the PDF generator functionality, implementing additional access control checks on the server side to ensure users can only access their own data, and monitoring for suspicious access patterns.

Additionally, consider disabling or limiting the use of the affected functionality until a patch or update is available.

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Compliance Impact

The vulnerability in MicroRealEstate allows unauthorized tenants to access invoices and sensitive personally identifiable information (PII) of other users, including full names, addresses, and rental terms.

This exposure of PII can lead to non-compliance with data protection regulations such as GDPR and HIPAA, which require strict controls over access to personal data and mandate protection against unauthorized disclosure.

Specifically, broken object-level access controls violate principles of least privilege and data confidentiality, potentially resulting in regulatory penalties and legal consequences for failing to safeguard sensitive user information.

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