CVE-2025-39367 in Kleo Plugin
Summary
by MITRE • 04/28/2025
Missing Authorization vulnerability in SeventhQueen Kleo.This issue affects Kleo: from n/a before 5.4.4.
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Analysis
by VulDB Data Team • 04/28/2025
The vulnerability identified as CVE-2025-39367 represents a critical missing authorization flaw within the SeventhQueen Kleo platform, a content management system designed for e-commerce operations. This weakness allows unauthorized users to bypass legitimate access controls and gain privileges typically restricted to authorized administrators or users. The vulnerability exists across all versions prior to 5.4.4, indicating a long-standing security gap that could have been exploited by malicious actors for extended periods. The affected system likely implements insufficient access validation mechanisms that fail to properly verify user credentials and permissions before granting access to sensitive administrative functions or restricted data resources.
The technical nature of this authorization bypass stems from inadequate input validation and privilege checking within the application's authentication framework. Attackers can exploit this vulnerability by crafting specific requests that circumvent normal authorization flows, potentially gaining access to user accounts, modifying product catalogs, accessing sensitive customer data, or performing administrative operations without proper credentials. This flaw aligns with CWE-285, which categorizes improper authorization issues as a fundamental weakness in access control mechanisms. The vulnerability demonstrates a failure in implementing proper role-based access control (RBAC) or attribute-based access control (ABAC) systems that should enforce strict boundaries between different user roles and their respective permissions.
The operational impact of this vulnerability extends beyond simple unauthorized access, potentially enabling more sophisticated attacks such as data exfiltration, account takeovers, or modification of critical business data. Organizations using affected versions of Kleo may face significant risks including customer data breaches, financial losses, regulatory penalties, and reputational damage. The vulnerability's persistence across multiple versions suggests that proper security testing and code review processes may have been insufficient during development cycles. Security professionals should consider this issue as part of the broader ATT&CK framework's privilege escalation tactics, where attackers leverage authorization weaknesses to move laterally within compromised systems and expand their access privileges.
Mitigation strategies should prioritize immediate deployment of the patched version 5.4.4, which addresses the authorization bypass through enhanced access control validation mechanisms. Organizations must conduct comprehensive security assessments to identify any potential exploitation that may have occurred before the patch deployment. Additional defensive measures include implementing network segmentation, monitoring access logs for suspicious activities, and establishing robust user access management policies. Security teams should also consider deploying web application firewalls to detect and block malicious requests attempting to exploit this vulnerability. Regular security audits and penetration testing should be conducted to ensure that similar authorization flaws do not exist in other components of the system architecture, particularly focusing on the principle of least privilege implementation and proper session management practices.