CVE-2024-54999 in MonicaHQ
Summary
by MITRE • 01/13/2025
MonicaHQ v4.1.2 was discovered to contain a Client-Side Injection vulnerability via the last_name parameter the General Information module.
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Analysis
by VulDB Data Team • 06/22/2025
The vulnerability identified as CVE-2024-54999 represents a critical client-side injection flaw within MonicaHQ version 4.1.2, specifically affecting the General Information module. This vulnerability manifests through the last_name parameter, which fails to properly sanitize user input before processing. The issue stems from insufficient validation and sanitization mechanisms that allow malicious actors to inject arbitrary client-side code into the application's user interface. Such vulnerabilities typically arise when applications fail to implement proper input validation and output encoding measures, creating opportunities for attackers to manipulate the client-side execution environment.
The technical nature of this flaw aligns with CWE-79, which describes Cross-Site Scripting (XSS) vulnerabilities, and more specifically CWE-937, which addresses the improper neutralization of special elements in client-side scripts. The vulnerability exists because the application does not adequately filter or escape user-supplied data before rendering it within the web interface, particularly in the last_name field of the General Information module. Attackers can exploit this by submitting malicious payloads through the last_name parameter that, when processed and displayed, execute unintended JavaScript code in the context of other users' browsers.
The operational impact of this vulnerability extends beyond simple data manipulation, as it can enable attackers to perform session hijacking, steal user credentials, redirect users to malicious sites, or execute arbitrary commands within the victim's browser context. When users view profiles containing malicious last_name values, their browsers execute the injected scripts, potentially compromising their sessions and sensitive data. This vulnerability particularly affects the application's integrity and user trust, as it allows for persistent attacks that can affect multiple users over time. The attack vector is particularly concerning because it requires minimal privileges and can be exploited through normal user interactions with the application's profile management features.
Mitigation strategies for CVE-2024-54999 should prioritize immediate input validation and output encoding implementations. Organizations must ensure all user-supplied data is properly sanitized before being processed or displayed, implementing strict validation rules that reject potentially harmful input patterns. The application should employ proper HTML encoding for all dynamic content, particularly when rendering user-provided data in web interfaces. Additionally, implementing Content Security Policy (CSP) headers can provide an additional layer of protection against script execution. Security patches should be applied immediately to update MonicaHQ to a version that addresses this vulnerability, following the principle of least privilege for input handling and implementing comprehensive logging to detect potential exploitation attempts. The remediation process should also include regular security testing and code reviews to prevent similar vulnerabilities from emerging in other application components.