What is CVE-2026-4237?

CVE-2026-4237 is a high-severity vulnerability in Itsourcecode Free Hotel Reservation System, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-03-16.

How severe is CVE-2026-4237?

High severity. CVSS v3 base score is 7.3 out of 10.

SQL Injection in Itsourcecode Free Hotel Reservation System

CVE-2026-4237

A flaw has been found in itsourcecode Free Hotel Reservation System 1.0. This vulnerability affects unknown code of the file /hotel/admin/mod_reports/index.php. Executing a manipulation of the argument Home can lead to sql injection. The attack may be performed from remote. The exploit has been published and may be used.

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (32.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002

Affected products

Itsourcecode Free Hotel Reservation System — versions 1.0

Weakness classification (CWE)

References

vuldb.com/ (technical-description, vdb-entry)
vuldb.com/ (signature, permissions-required)
vuldb.com/ (third-party-advisory)
github.com/yuji0903/silver-guide/issues/14 (issue-tracking, exploit)
itsourcecode.com/ (product)

Frequently asked questions

What is CVE-2026-4237?: CVE-2026-4237 is a high-severity vulnerability in Itsourcecode Free Hotel Reservation System, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-03-16.
How severe is CVE-2026-4237?: High severity. CVSS v3 base score is 7.3 out of 10.