Which versions of PHP are affected by CVE-2026-4612?

A critical SQL injection vulnerability in the Free Hotel Reservation System allows unauthenticated attackers to compromise the database without authentication.

Is there a public PoC exploit available for CVE-2026-4612?

Yes, a public proof-of-concept exploit is available for CVE-2026-4612. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-4612?

Within 24 hours: Immediately isolate affected systems from production networks and disable the /hotel/admin/mod_users/index.php endpoint if possible; notify incident response team and begin forensic assessment for signs of exploitation. Within 7 days: Deploy Web Application Firewall (WAF) rules to block SQL injection payloads targeting the account_id parameter; implement database access controls and query monitoring; assess feasibility of upgrading or replacing the vulnerable application. Within 30 days: Execute a comprehensive remediation plan—either apply vendor patches when released, migrate to an alternative hotel reservation platform, or decommission the affected system entirely; conduct a complete database audit for unauthorized access or modifications.

PHP CVE-2026-4612

Q: What is the CVSS score of CVE-2026-4612?

CVE-2026-4612 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

EUVD-2026-14604 MEDIUM

SQL Injection (CWE-89)

2026-03-23 VulDB

PHP SQLi Free Hotel Reservation System Itsourcecode

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.9 (MEDIUM) 5.5 (MEDIUM)

Severity Changed

Apr 24, 2026 - 16:37 NVD

HIGH MEDIUM

CVSS changed

Apr 24, 2026 - 16:37 NVD

7.3 (HIGH) 6.9 (MEDIUM)

PoC Detected

Mar 24, 2026 - 15:53 vuln.today

Public exploit code

EUVD ID Assigned

Mar 23, 2026 - 22:15 euvd

EUVD-2026-14604

Analysis Generated

Mar 23, 2026 - 22:15 vuln.today

CVE Published

Mar 23, 2026 - 21:57 nvd

HIGH 7.3

DescriptionCVE.org

A vulnerability has been found in itsourcecode Free Hotel Reservation System 1.0. This affects an unknown part of the file /hotel/admin/mod_users/index.php?view=edit&id=8 of the component Parameter Handler. The manipulation of the argument account_id leads to sql injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.

AnalysisAI

SQL injection in the Free Hotel Reservation System 1.0 admin panel allows unauthenticated remote attackers to manipulate the account_id parameter and execute arbitrary SQL queries with potential for data theft, modification, and system disruption. Public exploit code exists for this vulnerability, and no patch is currently available.

Technical ContextAI

This vulnerability affects the Free Hotel Reservation System 1.0 developed by itsourcecode (CPE: cpe:2.3:a:itsourcecode:free_hotel_reservation_system:*:*:*:*:*:*:*:*), a PHP-based hotel reservation management application. The root cause is CWE-89 (SQL Injection), which occurs when user-supplied input from the account_id parameter in the Parameter Handler component is improperly sanitized before being used in SQL queries. This allows attackers to inject malicious SQL code that will be executed by the backend database, typically MySQL or MariaDB in PHP applications. The vulnerability exists in the administrative interface's user modification functionality, specifically when editing user records through the view=edit endpoint.

RemediationAI

No official patch or security advisory from itsourcecode has been referenced in the available intelligence sources, indicating the vendor may not have released an updated version addressing this vulnerability. Organizations should immediately implement input validation and parameterized queries (prepared statements) for the account_id parameter in /hotel/admin/mod_users/index.php. As an interim mitigation, restrict access to the /hotel/admin/ directory to trusted IP addresses only through web server configuration (Apache .htaccess or Nginx location blocks) and implement a web application firewall (WAF) with SQL injection signature detection. Consider migrating to an actively maintained hotel reservation system with a better security track record. Monitor database logs for suspicious query patterns and unauthorized access attempts. Refer to the vulnerability details at https://vuldb.com/?id.352476 and the exploit documentation at https://github.com/bybinyu/Vulnerability-Practice/issues/2 to understand attack patterns for detection purposes.