CVE-2025-29427 in Online Class and Exam Scheduling System
Summary
by MITRE • 03/17/2025
Code-projects Online Class and Exam Scheduling System V1.0 is vulnerable to Cross Site Scripting (XSS) in profile.php via the member_first and member_last parameters.
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Analysis
by VulDB Data Team • 10/23/2025
The CVE-2025-29427 vulnerability affects the Code-projects Online Class and Exam Scheduling System version 1.0, specifically targeting the profile.php script through improper input validation of member_first and member_last parameters. This represents a classic cross site scripting flaw that allows malicious actors to inject arbitrary javascript code into the application's response, potentially compromising user sessions and data integrity. The vulnerability stems from the application's failure to properly sanitize or encode user-supplied input before rendering it within the web page context, creating an attack surface where crafted payloads can execute in the victim's browser.
This XSS vulnerability operates under CWE-79 which categorizes cross site scripting as a critical web application security weakness. The flaw manifests when the application directly incorporates user-provided data from member_first and member_last parameters into HTML output without appropriate sanitization measures. Attackers can exploit this by submitting malicious payloads through these parameters, which then get executed when other users view the affected profile page. The attack vector is particularly concerning because it targets profile information handling, which typically contains personal identifiers and user details that may be exploited for further attacks.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable session hijacking, credential theft, and redirection to malicious sites. When users with administrative privileges view compromised profiles, the attack could escalate to full system compromise. The vulnerability affects the application's user authentication and authorization mechanisms, potentially allowing attackers to impersonate legitimate users. According to ATT&CK framework, this maps to T1531 which covers "Account Access Removal" and T1566 which covers "Phishing", as attackers can leverage the XSS to steal session cookies and credentials.
Mitigation strategies should focus on implementing proper input validation and output encoding techniques to prevent malicious code injection. The system requires immediate implementation of CSP (Content Security Policy) headers to limit script execution sources, along with proper HTML entity encoding of all user-supplied data before rendering. Input sanitization should be enforced at multiple levels including client-side validation and server-side filtering using established libraries. Additionally, the application should implement proper parameter validation to reject or sanitize special characters that could be used in XSS attacks. Regular security testing including automated scanning and manual penetration testing should be conducted to identify similar vulnerabilities in other parameters and scripts within the application. The fix should align with OWASP Top Ten security recommendations and follow secure coding practices to prevent similar issues in future releases.