CVE-2022-41376 in Metro UI
Summary
by MITRE • 10/11/2022
Metro UI v4.4.0 to v4.5.0 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the Javascript function.
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Analysis
by VulDB Data Team • 05/20/2025
The vulnerability identified as CVE-2022-41376 represents a critical reflected cross-site scripting flaw within the Metro UI framework version range of 4.4.0 through 4.5.0. This security weakness specifically manifests through a vulnerable javascript function that fails to properly sanitize user input before incorporating it into dynamic web content. The reflected nature of this vulnerability means that malicious actors can craft specially crafted URLs that, when executed by unsuspecting users, will cause the browser to execute malicious javascript code from the attacker-controlled payload. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79 which specifically addresses improper neutralization of input during web page generation, making it a prime target for exploitation in modern web applications.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the javascript functions of the Metro UI framework. When user-supplied parameters are directly included in the response without proper sanitization, the framework becomes susceptible to injection attacks that can manipulate the web page's execution context. Attackers can leverage this weakness by constructing malicious URLs containing javascript payloads that get reflected back to the victim's browser when the page loads. The vulnerability's impact extends beyond simple script execution as it can enable session hijacking, credential theft, and redirection to malicious sites. This particular flaw aligns with ATT&CK technique T1566.001 which involves the exploitation of web applications through reflected cross-site scripting, making it a significant concern for organizations utilizing affected versions of the Metro UI framework.
The operational impact of CVE-2022-41376 poses substantial risks to organizations that depend on the Metro UI framework for their web applications. Successful exploitation can lead to unauthorized access to user sessions, data exfiltration, and potential compromise of entire web applications. The vulnerability's presence in multiple versions within the 4.4.0 to 4.5.0 range suggests that a significant number of applications may be exposed, particularly those that have not yet upgraded to patched versions. Organizations using affected frameworks face increased attack surface and potential regulatory compliance issues, as reflected XSS vulnerabilities are commonly cited in security audits and penetration testing assessments. The ease of exploitation through simple URL manipulation makes this vulnerability particularly dangerous in environments where users may inadvertently click on malicious links or where automated attack tools can systematically scan for such weaknesses.
Mitigation strategies for CVE-2022-41376 require immediate action to address the reflected XSS vulnerability within the Metro UI framework. The primary recommendation involves upgrading to a patched version of the framework that properly implements input sanitization and output encoding mechanisms. Organizations should also implement comprehensive input validation at multiple layers including client-side and server-side processing to prevent malicious data from being processed through the vulnerable javascript functions. Additional protective measures include implementing content security policies that restrict script execution, using proper output encoding for all dynamic content, and conducting regular security assessments to identify similar vulnerabilities. The remediation process should also include educating developers about secure coding practices to prevent similar issues in custom implementations that may utilize the affected framework components. Security teams should monitor for exploitation attempts and consider implementing web application firewalls that can detect and block known XSS attack patterns targeting this specific vulnerability.