CVE-2024-27627 in SuperCali
Summary
by MITRE • 03/05/2024
A reflected cross-site scripting (XSS) vulnerability exists in SuperCali version 1.1.0, allowing remote attackers to execute arbitrary JavaScript code via the email parameter in the bad_password.php page.
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Analysis
by VulDB Data Team • 04/15/2026
The vulnerability identified as CVE-2024-27627 represents a critical reflected cross-site scripting flaw within SuperCali version 1.1.0 software. This security weakness resides in the bad_password.php page where the email parameter is improperly handled, creating an avenue for malicious actors to inject and execute arbitrary JavaScript code within the context of affected user browsers. The reflected nature of this vulnerability means that the malicious payload is embedded within a URL or HTTP request and then reflected back to the user's browser, making it particularly dangerous as it can be delivered through phishing emails or malicious links without requiring persistent server-side modifications. This vulnerability directly violates the principle of input validation and output encoding, which are fundamental security practices that should prevent user-supplied data from being interpreted as executable code.
The technical implementation of this flaw demonstrates a classic XSS vulnerability pattern where user input flows directly into the application's output without proper sanitization or encoding mechanisms. When a user visits a maliciously crafted URL containing the XSS payload within the email parameter, the application fails to properly escape or validate this input before rendering it in the web page context. This creates an environment where attackers can execute scripts in the victim's browser session, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability specifically affects the bad_password.php page, indicating that this particular endpoint lacks proper security controls for handling user-provided email addresses during authentication failure scenarios.
The operational impact of CVE-2024-27627 extends beyond simple script execution, as it provides attackers with the capability to establish persistent access to user sessions and potentially compromise entire user accounts. An attacker could craft malicious URLs that, when clicked by authenticated users, would steal session cookies or redirect users to phishing pages designed to capture credentials. The vulnerability's remote exploitation capability means that attackers do not require physical access to the system or network, making it particularly concerning for web applications that handle sensitive user data. This flaw aligns with CWE-79 which specifically addresses cross-site scripting vulnerabilities, and it maps to attack techniques within the ATT&CK framework under T1566 for Phishing and T1071 for Application Layer Protocol usage, demonstrating the multi-faceted nature of the threat.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. The immediate fix requires sanitizing all user-provided input, particularly the email parameter in the bad_password.php page, through proper HTML entity encoding before rendering any user-supplied data in web responses. Organizations should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Regular security testing including automated scanning and manual penetration testing should be conducted to identify similar vulnerabilities across the application. The implementation of a Web Application Firewall can provide additional protection layers, while comprehensive security training for developers should emphasize secure coding practices and the importance of input validation. This vulnerability serves as a reminder of the critical importance of defending against XSS attacks through proper application design and the implementation of defense-in-depth strategies that protect against various attack vectors.