CVE-2026-5551Public exploitNetwork attack vector

Unauthenticated SQL injection via unsanitized email parameter

Published Apr 5, 2026 · Updated Apr 5, 2026

SQL injection in Free Hotel Reservation System 1.0 allows remote attackers to manipulate database queries through the admin login form. /hotel/admin/login.php inserts the POST email parameter directly into an SQL query without validation or parameter binding. No authentication is required; published payloads demonstrate boolean-, error-, stacked-, and time-based query manipulation, enabling unauthorized database reads or writes.

CVSS severity7.3
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Free Hotel Reservation System 1.0 allows remote attackers to manipulate database queries through the admin login form. /hotel/admin/login.php inserts the POST email parameter directly into an SQL query without validation or parameter binding. No authentication is required; published payloads demonstrate boolean-, error-, stacked-, and time-based query manipulation, enabling unauthorized database reads or writes.

The record

CVE
CVE-2026-5551
Published
Apr 5, 2026
Updated
Apr 5, 2026
Vendor
itsourcecode.com
Product
Free Hotel Reservation System
Classifications
CWE-74, CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 5, 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 · Free Hotel Reservation Systemversion=1.0

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P

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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

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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