Cross-Site Scripting Vulnerability in itsourcecode Online Hotel Management System
CVE-2026-13557

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-2026-13557?

A cross-site scripting (XSS) vulnerability was discovered in the itsourcecode Online Hotel Management System version 1.0, specifically in the POST Request Handler component located in the file /admin/mod_room/controller.php. This vulnerability allows an attacker to manipulate the argument 'Name', potentially leading to unauthorized script execution in the user's browser. As the exploit can be executed remotely, it poses a significant risk if not addressed. Publicly available exploit code heightens the urgency for users to implement protective measures.

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-2026-13557 - Proof of Concept

References

https://vuldb.com/vuln/374565
vdb-entrytechnical-description
https://vuldb.com/vuln/374565/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13557
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)
.