Cross-Site Scripting Vulnerability in hrshadhin CloudSchool Product
CVE-2026-129251

4.8MEDIUM

Key Information:

Vendor

Hrshadhin

Status
Cloudschool
Vendor
CVE Published:
14 November 2026

What is CVE-2026-129251?

A cross-site scripting vulnerability has been identified in hrshadhin's CloudSchool, specifically within the Event Description Handler component located in the EventController.php file. This vulnerability arises from improper handling of user input in an unknown function, enabling attackers to craft malicious requests that can be executed in the context of other users. Exploitation of this vulnerability can be conducted remotely, significantly increasing the risk of attacks. The vendor has been alerted to this issue but has not provided a response, leaving users at potential risk.

Affected Version(s)

CloudSchool 3.0.0

CloudSchool 3.0.1

References

https://vuldb.com/vuln/437281
vdb-entrytechnical-description
https://vuldb.com/vuln/437281/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-129251
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ChetanPujari (VulDB User)
VulDB CNA Team
.