CVE-2023-4117Public exploitNetwork attack vector

Reflected XSS via unsanitized index parameter

Published Aug 3, 2023 · Updated Aug 2, 2024

Reflected XSS in /index.php in Offshore Web Master Rental Property Booking Calendar 2.0 allows remote attackers to run script. /index.php reflects the untrusted index query value into the generated page without neutralizing script-capable input. Exploitation requires a victim to open a crafted URL, after which the payload executes in that victim's browser under the application's origin.

CVSS severity6.1
Medium
EPSS probability3.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in /index.php in Offshore Web Master Rental Property Booking Calendar 2.0 allows remote attackers to run script. /index.php reflects the untrusted index query value into the generated page without neutralizing script-capable input. Exploitation requires a victim to open a crafted URL, after which the payload executes in that victim's browser under the application's origin.

The record

CVE
CVE-2023-4117
Published
Aug 3, 2023
Updated
Aug 2, 2024
Vendor
Offshore Web Master
Product
Rental Property Booking Calendar
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Offshore Web Master · Rental Property Booking Calendarversion=2.0

Published CVSS scores

5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/A:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/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

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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