CVE-2026-100313
Received Received - Intake

Cross-Site Scripting in CloudClassroom PHP Project

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulDB

Description
A weakness has been identified in mathurvishal CloudClassroom-PHP-Project up to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. This affects an unknown function of the file updatequery.php. Executing a manipulation of the argument queryx can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The vendor was contacted early about this disclosure but did not respond in any way.

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Meta Information

Published
2026-09-26
Last Modified
2026-09-26
Generated
2026-09-26
AI Q&A
2026-09-26
EPSS Evaluated
N/A
NVD
CVE-2026-100313
EUVD
EUVD-2026-87546

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mathurvishal cloudclassroom-php-project to 5dadec098bfbbf3300d60c3494db3fb95b66e7be (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability is a cross-site scripting (XSS) weakness in the mathurvishal CloudClassroom-PHP-Project software. It exists in the updatequery.php file where the queryx argument can be manipulated to execute malicious scripts. The attack can be launched remotely and a public exploit is available.

Detection Guidance

To detect this vulnerability, inspect the updatequery.php file for improper handling of the queryx parameter. Look for user-supplied input being reflected in output without proper sanitization. Check web server logs for unusual requests containing script tags or other XSS payloads targeting this parameter.

Impact Analysis

This vulnerability allows attackers to inject malicious scripts into web pages viewed by users. This could lead to theft of session cookies, account hijacking, or defacement of the website. Users could unknowingly execute harmful code while interacting with the affected application.

Compliance Impact

This XSS vulnerability could lead to unauthorized access to user data, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. It may result in data breaches, non-compliance penalties, and loss of trust in systems handling sensitive data.

Mitigation Strategies

Immediately remove or disable the updatequery.php file if it is not essential. If the file is required, apply strict input validation to sanitize the queryx parameter. Implement output encoding when displaying user input. Monitor network traffic for signs of exploitation attempts.

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