security

Security at CARS24

CARS24 is a next-generation eCommerce platform for pre-owned cars. We provide the best in class experience for car buyers by offering a wide assortment of certified cars that are home delivered with a click of a button while sellers get the best price of their vehicles in less than an hour.


At CARS24, we prioritise the security and privacy of our customers, especially when it comes to handling customer data. We are dedicated to providing a secure environment for our customers and appreciate the invaluable role that security researchers and experts play in identifying and addressing potential vulnerabilities.

🔥 Hall of Fame 🔥

Researchers that were provided with the title

Ben H

Chirag Saini

Shivam Shrivastav

Eligilibility for participation

You are responsible for complying with any applicable laws. You are not eligible to participate in this program if you are currently an employee of CARS24 or any of its subsidiaries.

Reports from former employees, the immediate family of current employees, or other associates of CARS24 that may present a conflict of interest in the program's goals will be more thoroughly reviewed. They may not qualify for the stated bounty awards at CARS24’s discretion.

Vulnerability Disclosure Policy

In order to protect our customers, we need to make sure that any reporting is done responsibly so we reserve the right to take any actions, including legal action, if the guidelines below are not followed:

  • By submitting a vulnerability report, you agree not to disclose the details to any third party without CARS24’s written consent
  • Please ensure that the privacy and safety of our customers are not compromised
  • Refrain from disrupting or degrading our services
  • Do not engage in any fraudulent activities
  • Provide sufficient detail for us to reproduce and validate the vulnerability, including the specific targets, steps taken, tools used, and any relevant artifacts
  • Allow a reasonable timeframe for CARS24 to address the vulnerability before seeking updates or taking further action

Upon submission of your finding, you are agreeing with the terms & conditions and are liable to the NDA

In-Scope

The program covers a range of CARS24 platforms, including our website, mobile applications, backend services and APIs.

  • CARS24 Web Applications (*.cars24.com)
  • CARS24 mobile applications (iOS and Android)
  • CARS24 related backend services and APIs

Out-of-Scope

Previously reported vulnerabilities
Accessible non-sensitive files (e.g., README.TXT, robots.txt) and missing HTTP security headers.

Phishing attacks, email spoofing (e.g., lack of SPF, DKIM), and related social engineering risks

Self-XSS, text injection, and clickjacking vulnerabilities with minor CSRF issues.

Insecure error handling (e.g., stack traces, path disclosure), lack of security headers and lack of Secure/HTTPOnly cookie flags.

TLS/SSL weaknesses (e.g., weak ciphers, expired certificates) and outdated software.

Distributed Denial of Service (DDoS) attacks and third-party service vulnerabilities outside CARS24’s control.

Reporting Vulnerabilities

If you discover a potential vulnerability, please submit a detailed report via email to cyber-security@cars24.com along with the following information:

  • A clear description of the vulnerability
  • Steps to reproduce the issue
  • Impact assessment (e.g., potential data exposure or system compromise)
  • Any relevant screenshots/video or code snippets

SLA

CARS24 will make the best effort to meet the following SLAs for hackers & researchers participating in our program:

  • Time to first response (from report submit) - 7 business day
  • Time to triage (from the first response) - 7 business days
  • Time to closure (from triage) - between 10 and 15 business days

Bounty Structure

CSVSS ScoreRatingRewards
9.0 - 10.0P1 - CriticalHall of Fame & Email of recommendation
7.0 - 8.9P2 - HighHall of Fame 
4.0 - 6.9P3 - MediumHall of Fame 
0.1 - 3.9P4 - LowAcknowledgement

Legal Safe Harbor

CARS24 supports ethical research and will not take legal action against researchers who comply with the program’s rules. We will not pursue any claims against you for vulnerabilities reported in good faith under this program.

Conclusion

We value the contributions of the cybersecurity community in enhancing the security of CARS24. Your efforts are crucial in helping us protect our customers’ information and ensure a secure environment for all users. Thank you for your commitment to making CARS24 a safer place!

Reach out to us at cyber-security@cars24.com
Happy hacking :)