CVE-2026-16486

Deferred Deferred - Pending Action

Cross-Site Scripting in Class and Exam Timetabling System

Publication date: 2026-07-21

Last updated on: 2026-07-22

Assigner: VulDB

Description

A vulnerability was found in SourceCodester Class and Exam Timetabling System 1.0. This affects an unknown part of the file /BSIS.php. Performing a manipulation of the argument day results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-21

Last Modified

2026-07-22

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-16486

EUVD

EUVD-2026-47587

Affected Vendors & Products

Vendor	Product	Version / Range
sourcecodester	class_and_exam_timetabling_system	1.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This vulnerability is a cross-site scripting (XSS) issue in the Class and Exam Timetabling System 1.0. It allows attackers to inject malicious scripts via the 'day' parameter in the /BSIS.php file. The attack can be executed remotely and an exploit has been publicly disclosed.

Detection Guidance

To detect this XSS vulnerability in the Class and Exam Timetabling System, inspect web traffic or server logs for requests containing the 'day' parameter with suspicious input. Look for patterns like <script> tags or JavaScript events in the 'day' argument of /BSIS.php requests.

Impact Analysis

This vulnerability could allow attackers to execute malicious scripts in your browser, potentially stealing session cookies, redirecting to phishing sites, or performing actions on your behalf. It may expose sensitive data or compromise user accounts if exploited.

Compliance Impact

This XSS vulnerability could lead to unauthorized access to personal data, violating GDPR's integrity and confidentiality requirements. For HIPAA, it may risk exposing protected health information if exploited, potentially leading to compliance breaches.

Mitigation Strategies

Immediately update the Class and Exam Timetabling System to the latest patched version. If no patch is available, implement input validation to sanitize the 'day' parameter in /BSIS.php. Use web application firewalls to filter malicious scripts.

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