CVE-2023-3564Network attack vector

Browser script execution via unneutralized booking parameters

Published Jul 8, 2023 · Updated Aug 2, 2024

Cross-site scripting in GZ Scripts GZ Multi Hotel Booking System 1.8 allows remote authenticated users to inject script via booking parameters. The undisclosed /index.php function fails to neutralize the adults, children, and cal_id parameters before incorporating them into generated page content. A victim must interact with the affected content; successful exploitation executes attacker-supplied script in the victim's browser and can alter displayed page content.

CVSS severity6.1
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in GZ Scripts GZ Multi Hotel Booking System 1.8 allows remote authenticated users to inject script via booking parameters. The undisclosed /index.php function fails to neutralize the adults, children, and cal_id parameters before incorporating them into generated page content. A victim must interact with the affected content; successful exploitation executes attacker-supplied script in the victim's browser and can alter displayed page content.

The record

CVE
CVE-2023-3564
Published
Jul 8, 2023
Updated
Aug 2, 2024
Vendor
GZ Scripts
Product
GZ Multi Hotel Booking System
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GZ Scripts · GZ Multi Hotel Booking Systemversion=1.8

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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