Overview
A Cross-Site Scripting (XSS) vulnerability, identified as CVE-2025-13784, has been discovered in yungifez Skuul School Management System up to version 2.6.5. This vulnerability allows an attacker to inject malicious scripts into the application, potentially compromising user data and application functionality. The vendor was notified but did not respond.
Technical Details
The vulnerability resides within the SVG File Handler, specifically affecting the /dashboard/schools/1/edit endpoint. By manipulating this endpoint, a remote attacker can inject malicious scripts that are then executed within the context of other users’ browsers. This is a stored XSS vulnerability, meaning the malicious script is stored on the server and executed each time a user accesses the affected page. The exploit is publicly available, increasing the risk of exploitation.
CVSS Analysis
The vulnerability has a CVSS score of 2.4, indicating a LOW severity.
- CVSS Score: 2.4
- Vector: (Details would be here if the CVSS vector string were provided)
- Severity: LOW
Despite the low severity, XSS vulnerabilities can still pose a risk, especially if combined with other vulnerabilities or if attackers target specific user groups.
Possible Impact
While the CVSS score indicates a low severity, successful exploitation of this XSS vulnerability could lead to:
- Session Hijacking: Attackers could potentially steal user session cookies, gaining unauthorized access to accounts.
- Defacement: The application’s appearance could be altered to display malicious content.
- Redirection: Users could be redirected to phishing websites.
- Data Theft: Sensitive information displayed on the affected page could be stolen.
Mitigation or Patch Steps
Unfortunately, as the vendor has not responded, there is no official patch available at this time. Users of Skuul School Management System are advised to take the following steps:
- Input Validation: Implement strict input validation on all fields, especially those related to SVG file uploads and processing. Sanitize any data before it is stored or displayed.
- Output Encoding: Encode all output data that is displayed on the page to prevent the execution of malicious scripts.
- Web Application Firewall (WAF): Deploy a WAF to detect and block XSS attacks. Configure the WAF with appropriate rules to filter out malicious scripts.
- Content Security Policy (CSP): Implement a Content Security Policy (CSP) to restrict the sources from which the browser is allowed to load resources. This can help prevent the execution of injected scripts.
- Monitor System Logs: Regularly monitor system logs for suspicious activity that may indicate an attempted or successful XSS attack.
- Consider Alternative Solutions: If possible, consider migrating to a more secure school management system.
