CVE-2023-54343 in QWE DL
Summary
by MITRE • 02/01/2026
QWE DL 2.0.1 mobile web application contains a persistent input validation vulnerability allowing remote attackers to inject malicious script code through path parameter manipulation. Attackers can exploit the vulnerability to execute persistent cross-site scripting attacks, potentially leading to session hijacking and application module manipulation.
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Analysis
by VulDB Data Team • 02/02/2026
The vulnerability identified as CVE-2023-54343 affects the QWE DL 2.0.1 mobile web application and represents a critical persistent input validation flaw that enables remote code execution through cross-site scripting attacks. This vulnerability specifically targets the path parameter handling mechanism within the application's input validation framework, creating a persistent security weakness that can be exploited by remote attackers without requiring authentication or privileged access. The flaw resides in the application's failure to properly sanitize and validate user-supplied input parameters, particularly those related to path navigation elements, allowing malicious payloads to be stored and executed within the application's context.
The technical implementation of this vulnerability stems from inadequate input filtering and output encoding mechanisms within the mobile web application's backend processing layers. When the application processes path parameters without proper validation, it fails to implement robust sanitization routines that would normally prevent malicious script injection attempts. This weakness aligns with CWE-79 - Improper Neutralization of Input During Web Page Generation, which specifically addresses cross-site scripting vulnerabilities arising from insufficient input validation and output encoding. The vulnerability operates at the application layer where user input is directly incorporated into web page content without proper security controls, creating a persistent XSS attack vector that can be triggered whenever the affected application processes the maliciously crafted path parameters.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with significant control over user sessions and application functionality. Successful exploitation can lead to session hijacking attacks where malicious actors gain unauthorized access to user accounts and their associated privileges, potentially compromising sensitive data and application modules. The persistent nature of the vulnerability means that once injected, malicious scripts can execute automatically whenever affected pages are loaded, creating a long-term threat vector that remains active until the input validation is properly patched. Attackers can manipulate application modules through the injected scripts, potentially leading to data exfiltration, privilege escalation, or complete application compromise, making this vulnerability particularly dangerous in mobile web environments where users may have elevated trust in the application's security.
Security mitigation strategies for CVE-2023-54343 should focus on implementing comprehensive input validation and output encoding controls within the application's processing pipeline. The recommended approach involves deploying strict parameter validation routines that sanitize all path parameters before processing, utilizing established security libraries and frameworks that provide automatic encoding for web content generation. Organizations should implement content security policies that prevent script execution and establish proper input sanitization mechanisms that filter out potentially malicious characters and sequences. The vulnerability's classification under ATT&CK technique T1566.001 - Phishing with Malicious Attachments and T1203 - Exploitation for Client Execution suggests that attackers may leverage this weakness as part of broader attack chains targeting mobile application users. Regular security testing including dynamic application security testing and manual penetration testing should be conducted to identify similar input validation weaknesses across the application's attack surface, while implementing proper logging and monitoring mechanisms to detect exploitation attempts. The remediation process must include thorough code review of all input handling routines, implementation of proper escape sequences for output rendering, and establishment of automated security controls that prevent similar vulnerabilities from emerging in future application versions.