CVE-2026-72601 in CSZ CMS
Summary
by MITRE • 08/11/2026
A broken access control vulnerability in CSZ CMS 1.3.2 allows unauthenticated remote attackers to read all form submissions including personally identifiable information via the admin form-submission viewer. The viewer endpoint lacks an authentication check and the framework authentication helper fails open. An unauthenticated attacker can access all contact form submissions without credentials.
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Analysis
by VulDB Data Team • 08/11/2026
This vulnerability represents a critical broken access control flaw in CSZ CMS 1.3.2 that exposes sensitive data to unauthenticated attackers. The issue manifests through the admin form-submission viewer endpoint which lacks proper authentication verification, creating an unauthorized access vector that directly contradicts fundamental security principles outlined in cwe-284. The framework's authentication helper exhibits a fail-open behavior, meaning it permits access when authentication checks cannot be properly verified rather than denying access as would be expected in a secure implementation.
The technical exploitation of this vulnerability occurs at the application layer where the form-submission viewer endpoint does not perform any credential validation before granting access to sensitive data. This represents a classic authorization bypass where the system assumes that any request to the endpoint should be permitted without proper authentication. The fail-open mechanism within the framework authentication helper creates an additional attack surface by allowing unauthorized users to gain access when the authentication system encounters errors or cannot properly validate credentials, which violates security best practices defined in nist sp 800-53 and iso/iec 27001.
The operational impact of this vulnerability is severe as it allows attackers to extract all contact form submissions including personally identifiable information without requiring any credentials. This exposes organizations to significant data breach risks and potential compliance violations under regulations such as gdpr, hipaa, and pci dss. Attackers can systematically enumerate form submissions and collect sensitive user data including names, email addresses, phone numbers, and potentially confidential business information, creating opportunities for identity theft, social engineering attacks, and targeted phishing campaigns that align with tactics documented in the mitre att&ck framework under initial access and credential access domains.
Organizations should implement immediate mitigations including enforcing proper authentication checks on all administrative endpoints, implementing robust authentication helper functions that fail closed rather than open, and conducting comprehensive security audits of all application components. The solution requires deploying proper session management, ensuring endpoint authentication mechanisms are properly validated, and implementing network-level restrictions to limit access to administrative interfaces. Additionally, organizations should consider implementing web application firewalls and monitoring systems to detect unauthorized access attempts to sensitive endpoints. Regular security testing including penetration testing and vulnerability scanning should be conducted to identify similar authorization flaws throughout the application stack. This vulnerability highlights the critical importance of proper access control implementation as outlined in owasp top ten and demonstrates how seemingly minor authentication failures can result in complete data exposure scenarios that require immediate remediation.