CVE-2026-59535 in Thrive Product Manager
Summary
by MITRE • 07/27/2026
Unauthenticated Broken Access Control in Thrive Product Manager <= 10.9.2 versions.
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Analysis
by VulDB Data Team • 07/27/2026
This vulnerability represents a critical broken access control flaw that affects the Thrive Product Manager application version 10.9.2 and earlier. The issue stems from insufficient authentication mechanisms that allow unauthorized users to bypass normal access restrictions and gain administrative privileges. According to the CWE classification system, this maps to CWE-284 which describes improper access control vulnerabilities where systems fail to properly enforce authorization checks. The vulnerability manifests when the application does not adequately validate user credentials or session tokens before granting access to sensitive administrative functions.
The technical implementation flaw occurs within the application's authentication and authorization framework where certain API endpoints or administrative interfaces can be accessed without proper authentication. Attackers can exploit this weakness by directly calling vulnerable endpoints or manipulating request parameters to gain unauthorized access to system configuration, user management, product data modification capabilities, and other administrative functions. This type of vulnerability falls under the ATT&CK technique T1078 which covers valid accounts and privilege escalation through unauthorized access to system resources.
The operational impact of this vulnerability is severe as it allows attackers to completely compromise the application environment. An unauthenticated attacker can modify product information, delete critical data, add malicious users, alter system configurations, and potentially escalate privileges to full administrative control. The lack of proper access controls means that all administrative functions become available to anyone who can reach the vulnerable endpoints. This vulnerability directly violates security principles established in standards such as NIST SP 800-53 which emphasizes the need for proper authentication and access control mechanisms.
Organizations using affected versions should immediately implement mitigations including updating to the latest patched version of Thrive Product Manager, implementing network segmentation to restrict access to administrative interfaces, enforcing strong authentication mechanisms, and monitoring for unauthorized access attempts. Additional defensive measures include configuring web application firewalls to detect and block suspicious requests targeting known vulnerable endpoints, implementing multi-factor authentication, and conducting regular security assessments of application interfaces to identify similar access control weaknesses. The vulnerability demonstrates the importance of principle of least privilege implementation and proper input validation in preventing unauthorized system access and maintaining data integrity.