CVE-2026-33385 in Quick.CMS
Summary
by MITRE • 07/29/2026
A Blind SQL injection vulnerability has been identified in Quick.CMS. Improper neutralization of input provided by a high-privileged user into multiple fields in administration panel allows for Blind SQL Injection attacks.
The vendor states that this administration panel already allows for significant modification capabilities. The SQL injection vulnerability primarily enables bypassing front-end validation controls and potential database destruction. Given the trust model in which this application is designed to be administered, remediation of this issue was not deemed necessary by the vendor.
This vulnerability has been found in version 6.8, but other versions might also be vulnerable.
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Analysis
by VulDB Data Team • 07/29/2026
This blind sql injection vulnerability in quick.cms represents a critical security flaw that exploits improper input validation within the administration panel interface. The vulnerability stems from insufficient sanitization of user inputs passed through multiple fields in the administrative interface, allowing malicious actors with high-privileged accounts to manipulate database queries through indirect means. This type of vulnerability falls under cwe-94 and aligns with attack techniques documented in the mitre att&ck framework under initial access and privilege escalation domains. The flaw specifically enables attackers to bypass front-end validation controls that are typically designed to prevent malicious input from reaching backend database systems.
The technical implementation of this vulnerability allows for sophisticated attack patterns where an attacker can infer database structure and content through timing variations or conditional responses without direct error messages. This blind approach requires careful crafting of sql payloads that can be executed within the application context, leveraging the trust relationship between legitimate administrative users and the system. The exploitation process typically involves sending carefully constructed input sequences that cause the database to behave differently based on boolean conditions, enabling information gathering through time-based or response-based techniques.
The operational impact of this vulnerability extends beyond simple data exfiltration, as it provides attackers with significant capabilities to manipulate application behavior and potentially destroy database structures entirely. Given that the administration panel already grants substantial modification capabilities, this vulnerability essentially removes any remaining barriers between an attacker with administrative access and complete system compromise. The vendor's decision not to remediate this issue reflects a dangerous assumption about the security model, as it fails to account for potential credential theft or privilege escalation scenarios where attackers might gain administrative access through other vectors.
The affected version 6.8 demonstrates that this vulnerability has existed within the application for an extended period, with potentially other versions also containing similar flaws due to the nature of the input validation bypass. This type of vulnerability represents a fundamental weakness in data sanitization practices and highlights the importance of implementing proper input validation at multiple layers of application architecture. Organizations using quick.cms should immediately implement compensating controls such as web application firewalls, database activity monitoring, and strict access controls for administrative accounts. The vulnerability also underscores the need for comprehensive security testing including penetration testing and code reviews to identify similar patterns in other applications that may be vulnerable to similar blind sql injection techniques.
The trust model assumption by the vendor represents a significant security flaw in application design philosophy, as it fails to consider that administrative credentials might be compromised through various attack vectors. This vulnerability demonstrates how proper input validation and sanitization should be implemented at all levels of an application stack, rather than relying solely on front-end controls or trust assumptions about user privileges. Organizations implementing similar applications should adopt defense-in-depth strategies that include database query parameterization, access logging, and regular security assessments to prevent exploitation of such vulnerabilities. The lack of vendor remediation for this issue creates a dangerous precedent where applications may be deployed with known weaknesses that can be leveraged by sophisticated attackers.