An authorization bypass vulnerability in Vvveb CMS could allow authenticated users to perform unauthorized actions, potentially compromising data integrity.

This vulnerability, categorized as CWE-639, stems from improper authorization checks, allowing a user with low privileges to access or manipulate data by modifying user-controlled keys.

Successful exploitation allows an attacker to bypass intended access controls, leading to unauthorized data modification or administrative actions within the CMS. While the CVSS score of 7.6 reflects a high severity due to the potential for significant impact on data integrity, the requirement for initial authentication limits the immediate attack surface.

Immediate Action: Update the Vvveb CMS installation to version 1.0.8.3 or later immediately.

Proactive Monitoring: Review application access logs for unusual patterns of resource access or unauthorized modification attempts by low-privileged accounts.

Compensating Controls: Implement a Web Application Firewall (WAF) with rules configured to detect and block suspicious parameter tampering or unexpected API requests.

Public Exploit Available: No (Exploit_available: false)

The vulnerability poses a significant risk to the integrity of the Vvveb CMS environment. Administrators should prioritize applying the vendor-provided security update to version 1.0.8.3 to eliminate the underlying authorization flaw and prevent potential unauthorized data manipulation.