Cross Site Scripting Vulnerability in itsourcecode Online Hotel Management System
CVE-2026-13556

5.3MEDIUM

Key Information:

Vendor

Itsourcecode

Status
Online Hotel Management System
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13556?

A cross site scripting vulnerability exists within itsourcecode Online Hotel Management System version 1.0, specifically affecting the POST Request Handler component. The vulnerability arises from improper handling of user input in the file /admin/mod_users/controller.php when the 'edit' action is invoked. An attacker can exploit this flaw by crafting a malicious request, potentially leading to unauthorized script execution in the user's browser. This exploit has been publicly disclosed and can be initiated remotely, highlighting the need for immediate attention and remediation.

Affected Version(s)

Online Hotel Management System 1.0

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-2026-13556 - Proof of Concept

References

https://vuldb.com/vuln/374564
vdb-entrytechnical-description
https://vuldb.com/vuln/374564/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13556
third-party-advisory

CVSS V4

Score:
5.3
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

Hh-176 (VulDB User)
.