CVE-2025-48958 in Froxlor
Summary
by MITRE • 06/02/2025
Froxlor is open source server administration software. Prior to version 2.2.6, an HTML Injection vulnerability in the customer account portal allows an attacker to inject malicious HTML payloads in the email section. This can lead to phishing attacks, credential theft, and reputational damage by redirecting users to malicious external websites. The vulnerability has a medium severity, as it can be exploited through user input without authentication. Version 2.2.6 fixes the issue.
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Analysis
by VulDB Data Team • 06/25/2025
The vulnerability identified as CVE-2025-48958 represents a critical HTML injection flaw within the Froxlor server administration software ecosystem. This open source platform, designed for managing web servers and hosting environments, contains a security weakness in its customer account portal that affects versions prior to 2.2.6. The vulnerability specifically targets the email section of user accounts, creating an attack vector that enables malicious actors to inject arbitrary HTML content into the application's user interface. This flaw operates under the Common Weakness Enumeration framework as CWE-79, which categorizes improper neutralization of input during web page generation, commonly known as cross-site scripting or XSS vulnerabilities. The attack surface is particularly concerning because it requires no authentication from the attacker, making it accessible to anyone who can interact with the vulnerable system through normal user channels.
The technical exploitation of this vulnerability occurs when user-provided input in the email section is not properly sanitized or validated before being rendered in the web interface. When an attacker successfully injects malicious HTML code, they can create deceptive user interface elements that appear legitimate to end users. This injection capability enables sophisticated phishing campaigns where users might be redirected to malicious domains that mimic legitimate Froxlor interfaces, potentially capturing login credentials or other sensitive information. The impact extends beyond simple credential theft as attackers can leverage the injected content to perform various malicious activities including session hijacking, data exfiltration, or even browser-based attacks that exploit additional vulnerabilities in the user's browsing environment. The medium severity rating reflects the balance between the ease of exploitation and the potential damage that can be inflicted, as the vulnerability can be triggered through simple user input manipulation without requiring privileged access or complex attack chains.
The operational consequences of this vulnerability pose significant risks to both Froxlor administrators and their end users. Organizations relying on Froxlor for server management may experience reputational damage when users encounter phishing attempts or suspicious website behavior originating from their infrastructure. The compromised trust relationship between system administrators and their customers can result in loss of business confidence and potential legal implications. Additionally, the vulnerability creates opportunities for attackers to establish persistent access points within the network infrastructure, as successful injections could lead to more sophisticated attacks such as man-in-the-middle operations or malware distribution through compromised user sessions. The lack of authentication requirements means that even casual browsing or minimal interaction with the vulnerable system could expose users to these threats, making the attack surface broader than typical input validation vulnerabilities.
Organizations utilizing Froxlor software should immediately implement mitigation strategies to protect their systems and users from potential exploitation. The primary and most effective solution involves upgrading to version 2.2.6 or later, which contains the necessary patches to address the HTML injection vulnerability. System administrators should conduct comprehensive vulnerability assessments to identify any potential exploitation attempts that may have occurred prior to the patch deployment. Additional protective measures include implementing strict input validation mechanisms, sanitizing all user-provided content before rendering, and establishing web application firewalls that can detect and block suspicious HTML injection patterns. Security monitoring should be enhanced to track user account activities in the email section, particularly for unusual input patterns or attempts to inject external resources. The ATT&CK framework categorizes this vulnerability under T1566, which involves phishing techniques, and T1071, which encompasses application layer protocols, highlighting the multi-faceted nature of the threat landscape this vulnerability creates. Regular security audits and penetration testing should be conducted to ensure that similar vulnerabilities do not exist in other components of the Froxlor platform or related systems within the organization's infrastructure.