Description

At Nederlandse Loterij, we consider the security of our systems to be of paramount importance. Despite our efforts to secure our systems, it is possible that a vulnerability or weakness may still occur. If you discover a vulnerability or weakness in one of our systems or the associated or underlying domains and/or specific domains of third parties and/or partners, we would appreciate it if you would inform us so that we can take measures as soon as possible.

Bounties

This is a responsible disclosure program without bounties.

Rules of engagement
Required
Not applicable
Not applicable
Not applicable

By participating in this program, you agree to:

  • Respect the Community Code of Conduct
  • Respect the Intigriti Terms and Conditions
  • Respect the scope of the program
  • Not discuss or disclose vulnerability information without prior written consent (including PoC's on YouTube and Vimeo)

Validation times

We will validate all submissions within the below timelines, once your submission has been verified by Intigriti.
Submissions validated outside of this may be awarded a €25 bonus.

Vulnerability Severity Time to validate
Exceptional 2 Working days
Critical 2 Working days
High 5 Working days
Medium 15 Working days
Low 15 Working days

This remains at the discretion of Nederlandse Loterij to award.

Assets
1
All other assets as listed in the In scope section
See the CSV file attached in the In-scope section for a full list of assets in scope
Other
No bounty
In scope

Introduction

We are happy to announce our program! We've done our best to clean up our known issues and now would like to request your help to spot the ones we missed!

Our worst-case scenarios are:
(Examples below)

  • A malicious actor manipulates lottery systems, draw logic, ticket validation, or prize allocation processes, potentially undermining the fairness and integrity of the lottery.
  • Sensitive customer data is exposed, including identity details, payment information, account history, or documents used for age and identity verification.
  • Player accounts are compromised, allowing attackers to access balances, claim winnings, change payout details, or abuse stored payment methods.
  • The platform is abused for fraud, money laundering, bonus abuse, or automated bot activity, creating regulatory, financial, and reputational risk for the lottery provider.
  • Full list of all in scope assets attached below
DNS_domains_NLO6.csv
8/11/2026, 11:24:11 AM
Out of scope

Application

  • Wordpress usernames disclosure
  • Pre-Auth Account takeover/OAuth squatting
  • Self-XSS that can't be used to exploit other users
  • Verbose messages/files/directory listings without disclosing any sensitive information
  • CORS misconfiguration on non-sensitive endpoints
  • Missing cookie flags
  • Missing security headers
  • Cross-site Request Forgery with no or low impact
  • Presence of autocomplete attribute on web forms
  • Reverse tabnabbing
  • Bypassing rate-limits or the non-existence of rate-limits.
  • Best practices violations (password complexity, expiration, re-use, etc.)
  • Clickjacking without proven impact/unrealistic user interaction
  • CSV Injection
  • Sessions not being invalidated (logout, enabling 2FA, etc.)
  • Tokens leaked to third parties
  • Anything related to email spoofing, SPF, DMARC or DKIM
  • Content injection without being able to modify the HTML
  • Username/email enumeration
  • Email bombing
  • HTTP Request smuggling without any proven impact
  • Homograph attacks
  • XMLRPC enabled
  • Banner grabbing/Version disclosure
  • Not stripping metadata of files
  • Same-site scripting
  • Subdomain takeover without taking over the subdomain
  • Arbitrary file upload without proof of the existence of the uploaded file
  • Blind SSRF without proven business impact (pingbacks aren't sufficient)
  • Disclosed/misconfigured Google Maps API keys
  • Host header injection without proven business impact

General

  • In case that a reported vulnerability was already known to the company from their own tests, it will be flagged as a duplicate
  • Theoretical security issues with no realistic exploit scenario(s) or attack surfaces, or issues that would require complex end user interactions to be exploited
  • Spam, social engineering and physical intrusion
  • DoS/DDoS attacks or brute force attacks
  • Vulnerabilities that only work on software that no longer receive security updates
  • Attacks requiring physical access to a victim's computer/device, man in the middle or compromised user accounts
  • Recently discovered zero-day vulnerabilities found in in-scope assets within 14 days after the public release of a patch or mitigation may be reported, but are usually not eligible for a bounty
  • Reports that state that software is out of date/vulnerable without a proof-of-concept
Severity assessment

This program follows Intigriti's triage standards based on the proof of concept.

FAQ

Where can we get credentials for the websites?

You can self-register on the application but please don’t forget to use your @intigriti.me address.
(Please note that self regristration is limited to Dutch residents and citizens)

All aboard!
Please log in or sign up on the platform

For obvious reasons we can only allow submissions or applications for our program with a valid Intigriti account.

It will only take 2 minutes to create a new one or even less to log in with an existing account, so don't hesitate and let's get started. We would be thrilled to have you as part of our community.

Overall stats
submissions received
1
average payout
N/A
accepted submissions
N/A
total payouts
N/A
Activity
8/14
logo
ethic_yuki
created a submission
8/14
Dutch Lottery VDP
launched