CVE-2023-43344 in Quick
Summary
by MITRE • 10/25/2023
Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local attacker to execute arbitrary code via a crafted script to the SEO - Meta description parameter in the Pages Menu component.
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Analysis
by VulDB Data Team • 02/05/2026
This cross-site scripting vulnerability exists within the opensolution Quick CMS version 6.7, specifically affecting the Pages Menu component where the SEO Meta description parameter is processed. The flaw represents a classic server-side input validation issue that permits malicious script execution through user-controllable fields. Attackers can exploit this weakness by injecting malicious javascript code into the Meta description field, which then gets rendered in the web interface without proper sanitization or encoding mechanisms. The vulnerability is classified as a local attack vector, meaning that the malicious actor must already have some level of access to the system or be able to influence the data entry process within the CMS administration interface. This type of vulnerability falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that allows attackers to inject malicious content into web pages viewed by other users.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with potential access to user sessions, data exfiltration capabilities, and possible privilege escalation within the CMS environment. When the malicious script executes in a victim's browser, it can harvest cookies, session tokens, or other sensitive information that could be used to impersonate users or gain deeper access to the system. The vulnerability demonstrates a critical failure in the application's input handling and output encoding processes, where user-supplied content flows directly into the web response without adequate sanitization. This weakness enables attackers to perform persistent XSS attacks that can affect multiple users who view pages containing the malicious Meta description content.
Security professionals should recognize this vulnerability as a prime example of how CMS platforms can become attack vectors when proper input validation and output encoding mechanisms are not implemented or maintained. The attack surface is particularly concerning given that Meta description fields are commonly used for SEO optimization and are often editable by multiple user roles within CMS environments. According to ATT&CK framework category T1531 - Run-time Application Prototyping, this vulnerability enables adversaries to establish persistent access through web-based attack vectors that leverage the trust relationship between the web application and its users. Organizations using Quick CMS version 6.7 should immediately implement mitigations including input sanitization of all user-controllable fields, implementation of Content Security Policy headers, and regular security auditing of all CMS components to prevent similar vulnerabilities from being exploited in the future.
The technical exploitation of this vulnerability requires minimal sophistication and can be accomplished through standard XSS payload injection techniques. Attackers typically encode malicious scripts using javascript escape sequences or HTML entities to bypass basic validation mechanisms that may be in place. The vulnerability is particularly dangerous in multi-user CMS environments where administrators may not be aware of malicious content being injected into Meta description fields by compromised users or insider threats. Remediation strategies should include comprehensive input validation using allow-list approaches, proper output encoding for all dynamic content, and regular security updates to address known vulnerabilities. Additionally, implementing web application firewalls and security monitoring systems can help detect and prevent exploitation attempts before they can cause significant damage to the CMS environment or user data.