CVE-2026-13557Public exploitNetwork attack vector

Stored script execution via unescaped room name

Published Jun 29, 2026 · Updated Jun 29, 2026

Stored cross-site scripting in itsourcecode.com Online Hotel Management System 1.0 allows remote attackers to execute scripts via crafted room names. The add action in /admin/mod_room/controller.php stores the POST name value in the room table without filtering, then emits it into HTML without output escaping. No login or authorization is required to submit a payload, but execution requires another user to view the stored room data; the script then runs in that user's browser session.

CVSS severity4.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in itsourcecode.com Online Hotel Management System 1.0 allows remote attackers to execute scripts via crafted room names. The add action in /admin/mod_room/controller.php stores the POST name value in the room table without filtering, then emits it into HTML without output escaping. No login or authorization is required to submit a payload, but execution requires another user to view the stored room data; the script then runs in that user's browser session.

The record

CVE
CVE-2026-13557
Published
Jun 29, 2026
Updated
Jun 29, 2026
Vendor
itsourcecode.com
Product
Online Hotel Management System
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

itsourcecode.com · Online Hotel Management Systemversion=1.0

Published CVSS scores

5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/A:N
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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