Cross-Site Scripting Vulnerability in mathurvishal CloudClassroom PHP Project
CVE-2026-100311

5.1MEDIUM

Key Information:

Vendor

Mathurvishal

Status
Cloudclassroom-PHP-project
Vendor
CVE Published:
26 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-100311?

A significant cross-site scripting vulnerability has been detected in the mathurvishal CloudClassroom PHP Project, specifically within the Faculty Video Management component. This vulnerability is caused by improper handling of parameters in the managevideos2.php file, allowing attackers to manipulate the V_Title, V_Url, and V_Remarks arguments. The exploitation can be conducted remotely, posing risks of unauthorized script execution in the user's browser. The lack of response from the vendor regarding this issue highlights an urgent need for users to assess their systems and apply necessary mitigations. As the product follows a rolling release system, users should monitor updates closely.

Affected Version(s)

CloudClassroom-PHP-Project 5dadec098bfbbf3300d60c3494db3fb95b66e7be

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-100311 - Proof of Concept

References

https://vuldb.com/vuln/410439
vdb-entrytechnical-description
https://vuldb.com/vuln/410439/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-100311
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

raffarj (VulDB User)
VulDB CNA Team
.