CVE-2019-5926 in KinagaCMS
Summary
by MITRE
Cross-site scripting vulnerability in KinagaCMS versions prior to 6.5 allows remote authenticated attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 08/17/2023
The CVE-2019-5926 vulnerability represents a critical cross-site scripting flaw discovered in KinagaCMS versions before 6.5, exposing the content management system to remote authenticated attack vectors that could compromise user sessions and data integrity. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically manifesting as a reflected XSS attack that allows malicious actors to inject arbitrary web scripts or HTML content into the application's response. The flaw exists in the application's input validation mechanisms, where user-supplied data is not properly sanitized before being rendered back to users, creating an exploitable entry point for attackers who have already gained legitimate authentication credentials.
The technical exploitation of this vulnerability requires an attacker to possess valid authentication credentials within the KinagaCMS system, as the flaw operates only in authenticated contexts. This authentication requirement provides some defense-in-depth but does not eliminate the risk entirely, since compromised accounts or insider threats could still leverage this vulnerability. The unspecified vectors suggest that the vulnerability could be triggered through multiple input points within the CMS, including but not limited to user profile fields, content management interfaces, or administrative panels where user input is processed and displayed without adequate sanitization. The vulnerability's impact extends beyond simple script injection, as it could potentially allow attackers to steal session cookies, redirect users to malicious sites, or manipulate the application's functionality to execute unauthorized actions.
From an operational standpoint, this vulnerability poses significant risks to organizations relying on KinagaCMS for their web content management needs, particularly those handling sensitive user data or conducting business-critical operations through the platform. The authenticated nature of the attack means that even if the application has perimeter security controls, compromised accounts could still lead to full system compromise through this XSS vector. Attackers could leverage this vulnerability to escalate privileges, access restricted administrative functions, or exfiltrate sensitive information from the CMS database. The impact aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, as well as T1566 for Phishing, since the vulnerability could be exploited to deliver malicious payloads that further compromise the system or user environment.
Organizations should immediately implement the vendor-provided patch for KinagaCMS version 6.5 or later, which addresses the input sanitization issues that enable this XSS vulnerability. Additionally, implementing comprehensive input validation and output encoding mechanisms across all user-facing application interfaces provides defense-in-depth against similar vulnerabilities. Security teams should conduct thorough vulnerability assessments to identify potential exploitation paths and implement web application firewalls with XSS detection capabilities. The remediation process should include user access reviews to ensure that authentication credentials remain secure and that least privilege principles are maintained. Regular security testing and code reviews focused on input validation and sanitization practices help prevent similar vulnerabilities from emerging in the future. Organizations should also consider implementing security awareness training for administrators to recognize potential social engineering attacks that could lead to credential compromise, since the vulnerability requires authenticated access to exploit effectively.