External risk intelligence

Simple Car Rental System Session Forgery Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2025-60306

The product is a car rental system, which is a web-based application designed to be accessed by users for bookings and management. Such applications are typically deployed as internet-facing web services to facilitate customer interaction.

Authentication Bypass

Code Projects Simple Car Rental System

1.0

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical security vulnerability has been identified in the code-projects Simple Car Rental System version 1.0, allowing unauthorized users to bypass permissions and access sensitive operations typically reserved for administrators. This exposure could lead to significant unauthorized actions within the system if it is deployed and accessible. The main concern is confirming relevance and exposure to our environment.

Low-privilege users can take over administrator functions.
Critical flaw allows unauthorized access to sensitive operations.
Confirm if this car rental system is in use.

Attack Path

How an attacker could exploit the issue

An attacker with low-level access to the Simple Car Rental System could potentially bypass existing permissions. By exploiting this vulnerability, they could impersonate users with higher privileges, allowing them to perform sensitive administrative actions within the system.

Low-privilege user access required.
Forge high-privilege user sessions.
Perform unauthorized sensitive operations.

Live Threat

Current exploitation, exposure, and threat context

A permission bypass vulnerability in the Simple Car Rental System could allow low-privilege users to impersonate high-privilege users, enabling them to perform sensitive operations. This occurs when the system fails to properly validate user privileges before granting access to administrative functions.

System access and sensitive operations.
Low-privilege users forge high-privilege sessions.
Unauthorized sensitive operations could occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

The code-projects Simple Car Rental System is a web-based application, likely accessible externally. Responsibility for addressing this permission bypass vulnerability will typically fall to the application owners and platform teams responsible for its deployment and maintenance. The initial crucial step is to ascertain the system's presence within your environment, confirm its exposure, and identify the accountable asset owner before planning any remediation.

Identify and confirm asset ownership.
Verify system reachability and criticality.
Plan remediation with vendor coordination.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the Simple Car Rental System?

Simple Car Rental System by code-projects is a web-based software application designed to handle vehicle reservations and fleet management tasks. It serves as a digital interface where users can browse, book, and manage car rentals, making it a functional tool for rental businesses to interact with their customers online.

What does this vulnerability mean?

This vulnerability involves a failure in how the application manages user rights, technically categorized as Improper Access Control (CWE-284) and Improper Authentication (CWE-287). Essentially, the system fails to correctly verify a user's identity or role, allowing a low-level user to craft a session that tricks the software into granting them full administrative powers.

How does an attacker trigger this flaw?

An attacker needs an existing, low-privilege account within the system to initiate the attack. Once logged in, they can manipulate session data to forge a high-privilege identity. Importantly, this bug is not triggered by anonymous visitors; it requires a valid, authenticated user to interact with the system's session handling logic to bypass existing restrictions.

Is my environment at risk from CVE-2025-60306?

According to Halo Surface Signal, this application is typically deployed as an internet-facing web service to allow customer bookings, which increases the likelihood of external reachability. You should care if you run version 1.0, as the nature of this software often places it in a position where it is exposed to broader network access rather than being restricted to a private, internal-only network.

How should I respond to this threat?

Your first step is to perform an inventory check to confirm if Simple Car Rental System 1.0 is active within your infrastructure. If discovered, identify the team responsible for its maintenance and verify its current exposure level. Since this is an application-layer issue, coordinate with your internal application owners to evaluate the system's role and prioritize necessary remediation steps.

References

github.com/Chen1-Boop/CVE/blob/main/CVE-2025-60306.md

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.