CVE-2025-6420VulnerabilityPublished 21 Jun 2025Updated 23 Jun 2025

CVE-2025-6420: code-projects Simple Online Hotel Reservation System · SQL Injection

Affects code-projects Simple Online Hotel Reservation SystemSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score

6.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 21 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
code-projects Simple Online Hotel Reservation System	Affected =1.0	Fixed in–

AI-suggested

1. Immediate mitigation should include restricting access to the /admin/add_room.php endpoint by IP whitelisting or VPN access to limit exposure to trusted personnel only. 2. Implement Web Application Firewall (WAF) rules specifically designed to detect and block SQL injection attempts targeting the 'room_type' parameter. 3. Apply input validation and parameterized queries or prepared statements in the application code to sanitize and safely handle user inputs, eliminating injection vectors. 4. Conduct thorough database and application logs monitoring for suspicious queries or anomalies indicative of exploitation attempts. 5. If feasible, isolate the affected system from critical networks until a secure version or patch is applied. 6. Engage with the vendor or community for updates or patches, and plan for an upgrade or migration to a more secure reservation system if the vendor does not provide timely remediation. 7. Educate administrative users on the risks and encourage strong credential policies to reduce the impact of potential lateral attacks following exploitation.

Description

A vulnerability was found in code-projects Simple Online Hotel Reservation System 1.0. It has been declared as critical. This vulnerability affects unknown code of the file /admin/add_room.php. The manipulation of the argument room_type leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Impact

For European organizations, particularly those in the hospitality sector using the Simple Online Hotel Reservation System version 1.0, this vulnerability poses a risk of unauthorized data access and manipulation. Exploitation could lead to exposure of customer personal data, booking details, and potentially payment information if stored in the same database. This compromises confidentiality and could result in regulatory non-compliance under GDPR, leading to legal and financial penalties. Integrity of booking data may be compromised, causing operational disruptions such as double bookings or incorrect room availability, impacting customer trust and revenue. Availability impact is likely limited but possible if attackers execute destructive SQL commands. Since the vulnerability is remotely exploitable without authentication, attackers can target exposed administrative interfaces directly, increasing risk. European hospitality businesses often rely on such systems for daily operations, so even medium-severity vulnerabilities can have outsized operational and reputational consequences. The lack of known active exploitation reduces immediate risk but the public disclosure of the exploit code increases the likelihood of opportunistic attacks.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 21 Jun 2025, 21:54 UTC

Technical details

References

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