CVE-2025-51411 in Institute-of-Current-Students
Summary
by MITRE • 07/25/2025
A reflected cross-site scripting (XSS) vulnerability exists in Institute-of-Current-Students v1.0 via the email parameter in the /postquerypublic endpoint. The application fails to properly sanitize user input before reflecting it in the HTML response. This allows unauthenticated attackers to inject and execute arbitrary JavaScript code in the context of the victim's browser by tricking them into visiting a crafted URL or submitting a malicious form. Successful exploitation may lead to session hijacking, credential theft, or other client-side attacks.
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Analysis
by VulDB Data Team • 10/10/2025
The vulnerability identified as CVE-2025-51411 represents a critical reflected cross-site scripting flaw within the Institute-of-Current-Students v1.0 web application. This security weakness resides specifically within the /postquerypublic endpoint where the application processes user input through the email parameter. The flaw stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize data before incorporating it into HTML responses. Such insufficient sanitization creates an exploitable condition where malicious payloads can be injected and subsequently executed within the victim's browser context. The vulnerability affects unauthenticated attackers who can leverage this weakness without requiring prior system access or credentials. The reflected nature of this XSS vulnerability means that the malicious script is reflected off the web server and executed in the victim's browser, making it particularly dangerous as it can be delivered through various attack vectors.
The technical implementation of this vulnerability aligns with CWE-79 which categorizes cross-site scripting as a code injection flaw where untrusted data is embedded into web pages viewed by other users. The attack vector exploits the application's failure to implement proper HTML escaping or encoding of user-supplied input before rendering it in the HTTP response. When a user visits a maliciously crafted URL containing the XSS payload in the email parameter, the web application processes this input without adequate sanitization and returns it directly to the user's browser. This creates an environment where JavaScript code can execute with the privileges of the victim's browser session. The vulnerability demonstrates a fundamental lack of input validation controls and output encoding practices that are essential for preventing client-side code injection attacks. The absence of proper security headers and content security policies further compounds the risk by not providing additional layers of protection against such malicious script execution.
The operational impact of CVE-2025-51411 extends beyond simple data theft to encompass comprehensive session compromise and potential account takeover scenarios. Successful exploitation enables attackers to steal session cookies, which can then be used to impersonate legitimate users and access restricted application functionality. The vulnerability can facilitate credential theft through various mechanisms including keylogger scripts that capture user input or through the exploitation of other browser-based vulnerabilities. Additionally, attackers can leverage this flaw to perform phishing attacks by redirecting users to malicious sites or to execute malicious code that can modify application behavior. The reflected nature of the vulnerability means that each attack instance must be individually crafted and delivered, but this also makes detection more challenging for security monitoring systems. The impact is particularly severe for an application serving current students as it could compromise sensitive academic information, personal data, and institutional communications. This vulnerability also aligns with ATT&CK technique T1566 which covers social engineering attacks through malicious links, and T1071 which covers application layer protocol usage for command and control communications.
Mitigation strategies for CVE-2025-51411 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary fix involves implementing robust input validation and output encoding mechanisms that sanitize all user-supplied data before processing or rendering it in web responses. This includes implementing proper HTML escaping for all dynamic content and utilizing content security policies to limit script execution. Organizations should deploy web application firewalls that can detect and block suspicious input patterns targeting XSS vulnerabilities. Input validation should include whitelisting acceptable character sets and length restrictions for email parameters. The application should also implement proper HTTP security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to provide additional protection layers. Regular security testing including automated scanning and manual penetration testing should be conducted to identify similar vulnerabilities across the application. Implementing a comprehensive security awareness program for developers can help prevent future occurrences of such flaws by emphasizing secure coding practices. Organizations should also establish incident response procedures that can quickly address exploitation attempts and provide guidance to affected users. The fix should also include logging and monitoring capabilities to detect potential exploitation attempts and provide forensic data for security investigations.