Platform
php
Component
security
Opgelost in
1.0.1
CVE-2026-4356 describes a cross-site scripting (XSS) vulnerability discovered in itsourcecode University Management System, specifically affecting version 1.0. This flaw allows an attacker to inject malicious scripts into the application, potentially compromising user data and session integrity. The vulnerability resides within the /add_result.php file, where manipulation of the 'vr' argument can trigger the XSS payload. A public exploit is available.
Successful exploitation of CVE-2026-4356 enables an attacker to execute arbitrary JavaScript code within the context of a user's browser session. This can lead to various malicious activities, including session hijacking, phishing attacks, and defacement of the application. An attacker could steal sensitive user data, such as login credentials or personal information, and use it to gain unauthorized access to the system. The remote nature of the vulnerability means it can be exploited from anywhere with network access to the affected system.
A public proof-of-concept (PoC) for CVE-2026-4356 has been published, indicating a relatively high likelihood of exploitation. The vulnerability is not currently listed on CISA KEV. Given the availability of a PoC, organizations using itsourcecode University Management System should prioritize patching or implementing mitigations to prevent exploitation.
Organizations utilizing itsourcecode University Management System version 1.0, particularly those with publicly accessible instances, are at risk. Shared hosting environments where multiple users share the same server instance are also at increased risk, as a successful exploit could potentially impact other users on the same server.
• php / web:
grep -r "/add_result.php" /var/www/html/• php / web:
curl -I http://your-university-management-system/add_result.php?vr=<script>alert(1)</script>• generic web:
curl -I http://your-university-management-system/add_result.php?vr=<script>alert(1)</script> | grep -i '200 ok'disclosure
Exploit Status
EPSS
0.03% (9% percentiel)
CISA SSVC
CVSS-vector
The primary mitigation for CVE-2026-4356 is to upgrade to a patched version of itsourcecode University Management System. As a temporary workaround, implement strict input validation and output encoding on the 'vr' parameter within the /add_result.php file. Consider using a Web Application Firewall (WAF) with XSS filtering rules to block malicious requests. Regularly scan the application for XSS vulnerabilities using automated tools.
Werk bij naar een gepatchte versie van het University Management System. Neem contact op met de leverancier voor een gecorrigeerde versie of pas een patch toe die de gebruikersinvoer correct filtert en ontsnapt in het bestand add_result.php, met name het argument 'vr', om XSS code-injectie te voorkomen.
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CVE-2026-4356 is a cross-site scripting (XSS) vulnerability affecting version 1.0 of itsourcecode University Management System. It allows attackers to inject malicious scripts via manipulation of the 'vr' argument in /add_result.php.
If you are using itsourcecode University Management System version 1.0, you are potentially affected by this vulnerability. Upgrade to a patched version as soon as possible.
The recommended fix is to upgrade to a patched version of itsourcecode University Management System. Until then, implement input validation and output encoding on the 'vr' parameter and consider using a WAF.
A public proof-of-concept exists, suggesting a potential for active exploitation. Organizations should prioritize mitigation to prevent attacks.
Please refer to the itsourcecode website or relevant security mailing lists for the official advisory regarding CVE-2026-4356.
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