CVE-2026-16485

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 has been found in SourceCodester Class and Exam Timetabling System 1.0. Affected by this issue is some unknown functionality of the file /class.php. Such manipulation of the argument day leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-16485

EUVD

EUVD-2026-47565

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 involves manipulating the 'day' argument in the /class.php file, allowing attackers to inject malicious scripts that execute in the context of a user's browser.

Detection Guidance

To detect this XSS vulnerability in the Class and Exam Timetabling System, inspect web traffic or server logs for requests to /class.php with a day parameter containing script tags or other XSS payloads. Manually test by appending payloads like <script>alert(1)</script> to the day parameter in URLs and observe responses for script execution.

Impact Analysis

An attacker could exploit this to steal user sessions, deface web pages, or trick users into revealing sensitive information. The impact is limited due to low CVSS scores, but remote exploitation is possible without authentication.

Compliance Impact

This vulnerability is a reflected cross-site scripting (XSS) issue that could allow attackers to inject malicious scripts into web pages viewed by users. For compliance with GDPR, this could lead to unauthorized data access or manipulation if user sessions are compromised. HIPAA compliance may be affected if protected health information is exposed or altered through such attacks.

Mitigation Strategies

Immediately patch the application to the latest version if available. As a temporary fix, implement input validation to sanitize the day parameter, rejecting or escaping any non-numeric input. Use WAF rules to block requests containing XSS payloads targeting /class.php.

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