CVE-2023-3073 in corebos
Summary
by MITRE • 06/02/2023
Cross-site Scripting (XSS) - Stored in GitHub repository tsolucio/corebos prior to 8.
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Analysis
by VulDB Data Team • 01/26/2026
The vulnerability identified as CVE-2023-3073 represents a stored cross-site scripting flaw within the tsolucio/corebos GitHub repository version 8 and earlier. This vulnerability falls under the broader category of web application security weaknesses that can have severe implications for user data and system integrity. The issue specifically affects the corebos platform, which is a customer relationship management system built on the vtiger framework, making it a critical concern for organizations relying on this software for business operations.
The technical flaw manifests when user-supplied input is not properly sanitized before being stored and subsequently rendered in web pages. In stored XSS scenarios, malicious scripts are permanently stored on the server and executed whenever users access affected pages, creating a persistent threat vector that can compromise multiple users over time. The vulnerability likely occurs in input handling mechanisms where user data enters the system through forms, API endpoints, or other data entry points without adequate validation or encoding. This type of vulnerability is classified as CWE-79 - Cross-site Scripting and can be mapped to ATT&CK technique T1566.001 - Phishing using victim email addresses, as attackers can leverage this weakness to execute malicious code in the context of affected user sessions.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious sites, or even extract sensitive data from the application. Given that corebos is a CRM platform handling sensitive business and customer information, successful exploitation could lead to data breaches, unauthorized access to proprietary information, and potential regulatory compliance violations. The persistent nature of stored XSS means that once the malicious payload is injected, it continues to affect users until the vulnerability is patched and the malicious content is removed from the system.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. Organizations should ensure that all user-provided data is sanitized using context-appropriate encoding methods before storage and rendering. The recommended approach involves applying Content Security Policy headers, implementing proper input validation libraries, and conducting thorough code reviews focusing on data flow between user inputs and output generation. Additionally, regular security testing including automated vulnerability scanning and manual penetration testing should be conducted to identify similar weaknesses in the codebase. The fix for this vulnerability would require updating the corebos platform to version 8 or later where the XSS vulnerability has been addressed through proper input sanitization and output encoding mechanisms. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts while maintaining the integrity of their CRM infrastructure and protecting sensitive business data from unauthorized access.