- Top reward
- €5,500
- Top severity paid
- Critical
- Assets in scope
- 33
- Public CVEs
- 0
- Last change
At a glance
What to know before you start testing.
- Pays up to €5,500
- for critical bugs, from €50.
- Report on Intigriti
- Submit through the program page.
- Full safe harbor
- Good-faith research is authorised; no legal action.
- Replies within 14 days
- As the policy promises.
- Publish after a fix
- Coordinate the timing with the company.
Rewards
What Intigriti lists as the payout for each severity.
| Severity | Relative size | Reward |
|---|---|---|
| Critical |
|
€5,500 from €1,500 |
| High |
|
€2,500 from €500 |
| Medium |
|
€750 from €150 |
| Low |
|
€150 from €50 |
- Response
-
Within 14 days
We will respond to report in ultimately two weeks, probably faster!
- Safe harbor
-
Full
We respect the safe harbour clause that you can find below
Summarised with AI from the program policy on Intigriti, read 12 Nov 2026, and checked word for word against it. Read the original
Scope
33 assets you may test, 15 excluded.
Wildcard domains 21
- *.gamma.be/*
- *.gamma.nl/*
- *.intergamma.cloud
- *.intergamma.nl/*
- *.intergamma-test.nl
- *.karwei.nl/*
- *.karweioutletstore.nl
- kassa.gamma.be/*
- kassa.gamma.nl/*
- kassa.karwei.nl/*
- mijn.gamma.be/*
- mijn.gamma.nl/*
- mijn.karwei.nl/*
- *.restintergamma.nl
- *.werkenbijgamma.be
- *.werkenbijgamma.nl
- *werkenbij.intergamma.nl
- *.werkenbijkarwei.nl
- www.gamma.be/*
- www.gamma.nl/*
- www.karwei.nl/*
Android apps 4
- be.gamma.app.android
- nl.gamma.app.android
- nl.gamma.verf
- nl.karwei.app.android
iOS apps 4
- 1558129454
- 949829216
- 950680989
- 950693949
Web 4
- gammacademy.be
- gammalokaal.nl
- irmg.nl
- karwei-promotiepunt.nl
Out of scope (15)
- Everything related to configurators, both on primary as other domains
- afspraakmaken.gamma.nl
- api.afspraakmaken.gamma.be
- api.afspraakmaken.gamma.nl
- api.maakafspraak.karwei.nl
- horrenconfigurator-fr.gamma.be
- horrenconfigurator.karwei.nl
- horrenconfigurator-nl.gamma.be
- karwei-2018.hetmooistegordijn.nl
- maakafspraak.karwei.nl
- mail.gamma.be
- mail.gamma.nl
- mail.karwei.nl
- *.configuratoren.nl/*
- *.zoofy.nl
Rules
What the policy asks of you, and the bug types it won't reward, quoted from Intergamma (via Intigriti)'s policy. "We" in these lines means the program, not this site.
While testing
-
The use of an intigriti.me address is mandatory at all times! (Not respecting these rules means you will not be eligible for a bounty)
-
Please do NOT publicly discuss or publish any vulnerability before it has been fixed and you have received explicit permission from us to do so.
-
Perform testing only on in-scope assets and respect assets and activities which are out-of-scope.
-
Make a good faith effort to avoid privacy violations, destruction of data, and interruption or degradation of our service.
-
If a vulnerability provides unintended access to data, limit the amount of data you access to the minimum required for effectively demonstrating a Proof of Concept.
-
Social engineering (e.g. phishing, vishing, smishing) is prohibited.
-
Do not attempt to execute Denial of Service attacks.
-
Please do *not* use automatic scanners -be creative and do it yourself! We cannot accept any submissions found by using automatic scanners.
Not accepted
-
API key disclosure without proven business impact
-
Wordpress usernames disclosure
-
Pre-Auth Account takeover/OAuth squatting
-
Self-XSS that cannot 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
Summarised with AI from the program policy on Intigriti, read 12 Nov 2026, and checked word for word against it. Read the original
Changes
Tracked since 11 Nov 2026. Last checked 8 minutes ago.
No changes yet. When the rewards or scope move, you will see it here and in the RSS feed.
Before we tracked it
Scope and reward changes recorded before this page started tracking it.
-
Scope added
*werkenbij.intergamma.nl
-
Scope added
https://*.zoofy.nl (out of scope)
-
Scope removed
nl.gamma.app.android
-
Scope removed
api.afspraakmaken.gamma.be (out of scope)
-
Scope removed
horrenconfigurator-fr.gamma.be (out of scope)
-
Scope removed
api.maakafspraak.karwei.nl (out of scope)
-
Scope removed
afspraakmaken.gamma.nl (out of scope)
-
Scope removed
api.afspraakmaken.gamma.nl (out of scope)
-
Scope removed
horrenconfigurator-nl.gamma.be (out of scope)
-
Scope removed
*.karweioutletstore.nl
-
Scope removed
*.intergamma.cloud
-
Scope removed
*.gamma.be/*
-
Scope removed
www.gamma.nl/*
-
Scope removed
*.configuratoren.nl/* (out of scope)
-
Scope removed
*.intergamma.nl/*
-
Scope removed
www.gamma.be/*
-
Scope removed
kassa.gamma.be/*
-
Scope removed
*.intergamma-test.nl
-
Scope removed
949829216
-
Scope removed
mail.karwei.nl (out of scope)
-
Scope removed
horrenconfigurator.karwei.nl (out of scope)
-
Scope removed
nl.karwei.app.android
-
Scope removed
950693949
-
Scope removed
950680989
-
Scope removed
nl.gamma.verf
-
Scope removed
maakafspraak.karwei.nl (out of scope)
-
Scope removed
karwei-promotiepunt.nl
-
Scope removed
gammalokaal.nl
-
Scope removed
gammacademy.be
-
Scope removed
*.werkenbijkarwei.nl
-
Scope removed
Everything related to configurators, both on primary as other domains (out of scope)
-
Scope removed
*.karwei.nl/*
-
Scope removed
mijn.karwei.nl/*
-
Scope removed
kassa.gamma.nl/*
-
Scope removed
www.karwei.nl/*
-
Scope removed
kassa.karwei.nl/*
-
Scope removed
mijn.gamma.nl/*
-
Scope removed
*.gamma.nl/*
-
Scope removed
mijn.gamma.be/*
-
Scope removed
*.werkenbijgamma.nl
Public CVEs
Published vulnerabilities in this vendor's products, from the NVD.
No CVEs matched yet. We match NVD records by vendor name, so products sold under another name can be missing.
Original policy
Copied from www.intigriti.com on 12 Nov 2026. The summaries on this page are made from it; the live page may have changed since.
Description
Intergamma is the biggest DIY retailer of The Netherlands and Belgium with three brands: GAMMA Nederland, GAMMA België, and KARWEI. We have almost 400 DIY stores and operate three eCommerce websites.
Our strategy is to be the best omnichannel retailer of the Netherlands and Belgium. This means offline and online are converging, and eCommerce is a growth market. Therefore a secure platform is paramount.
For more information on our organization please visit https://www.intergamma.nl/
Rules of engagement
In order to gain a positive relationship and avoid misinterpretation and vagueness, we would like you to review the following program rules before you report a vulnerability. By participating in this program, you agree to respect our policy.
Program Rules
- The use of an intigriti.me address is mandatory at all times! (Not respecting these rules means you will not be eligible for a bounty)
- Please do NOT publicly discuss or publish any vulnerability before it has been fixed and you have received explicit permission from us to do so. You can send us a video as proof of concept, but remember to change its privacy settings to private.
- Perform testing only on in-scope assets and respect assets and activities which are out-of-scope. If unsure or need advice, contact us.
- We are hosting at AWS, so please take into account their penetration testing policy which you can find at https://aws.amazon.com/security/penetration-testing/
- Make a good faith effort to avoid privacy violations, destruction of data, and interruption or degradation of our service.
- If a vulnerability provides unintended access to data, limit the amount of data you access to the minimum required for effectively demonstrating a Proof of Concept.
- Cease testing and submit a report immediately if you encounter any user data during testing, such as Personally Identifiable Information (PII), Personal Healthcare Information (PHI), credit card data, or proprietary information.
- Provide an appropriate level of detail with reproducible steps so that the issue can be easily reproduced.
- Please include the HTTP requests/responses in the report. This will help us to search for duplicate reports using the endpoint and triage reports more effectively; include the vulnerable requests in the comment using markdown.
- Social engineering (e.g. phishing, vishing, smishing) is prohibited.
- Do not attempt to execute Denial of Service attacks.
Our promise to you
- We will respond to report in ultimately two weeks, probably faster!
- We are happy to respond to any questions, please use the button in the right top corner for this.
- We respect the safe harbour clause that you can find below
Your promise to us
- Provide detailed but to-the point reproduction steps
- Include a clear attack scenario. How will this affect us exactly?
- Remember: quality over quantity!
- Please do not discuss or post vulnerabilities without our consent (including PoC's on YouTube and Vimeo)
- Please do not use automatic scanners -be creative and do it yourself! We cannot accept any submissions found by using automatic scanners. Scanners also won't improve your skills, and can cause a high server load (we'd like to put our time in thanking researchers rather than blocking their IP's 😉)
In scope
All the websites have an open registration.
We are happy to announce our first bug bounty program! We've done our best to clean most of our known issues and now would like to request your help to spot the ones we missed! We are specifically looking for:
- leaking of personal data
- account takeover
- ordering free items (and get all the required confirmations so it is a successful order)
- access to backend resources
- access to internal API's
For the sites in scope please refer to the 'Domains' section. Please take into account the patterns (e.g. for www.intergamma.nl everything with prefixes is out of scope)
Third party components We use various third party components, for example in iframes (many of our configurators). Please note that these are managed by third parties. Feel free to submit any issue found there, but be aware the severity and bounty will depend on the impact it has on our organisation. For example, if you can order free items due to an error in a third party application, but the the third party will reimburse Intergamma if this happens, we are not obliged to pay a bounty, but will consider it depending on the severity (since our name is on the wall).
Mobile apps Next to our websites our mobile apps are also in scope. Please note they have a big overlap in API call's and use a webview of the websites. Therefore many vulnerabilities present there stem from there. That's why we would like you to focus on the websites, hence the lower tier for the apps for now!
Please note that we largely use the same backend for all our websites and apps. That means a vulnerability in one, will most of the time be a vulnerability in all. Please submit it only once, we are not paying out for the same issue in different web sites (or we have to cut our bounties in nine 😉)
We plan to regularly put new features in the spotlight that still need to proof themselves, so keep an eye on us or subscribe to our program to receive updates when we do!
Out of scope
Known issues
- Information about our stores is exposed through the API. This is public information and therefore an accepted risk
- We do not (yet) reset current sessions when password is changed
- The authentication logic behind the Chrome Extension used for kioskadmin.gamma
Domains
- qr.gamma.nl or qr.karwei.nl are whitelabeled domains using a Bitly QR code generator. Intergamma does not operate the software or infrastructure. We do not accept submissions for these domains
Application
- API key disclosure without proven business impact
- Wordpress usernames disclosure
- Pre-Auth Account takeover/OAuth squatting
- Self-XSS that cannot 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 are not 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
- Although we appreciate submissions of leaked accounts from infostealers, we will not provide bounties for them unless we are the ones leaking data
- 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
Mobile
- Shared links leaked through the system clipboard
- Any URIs leaked because a malicious app has permission to view URIs opened
- The absence of certificate pinning
- Sensitive data in URLs/request bodies when protected by TLS
- Lack of obfuscation
- Path disclosure in the binary
- Lack of jailbreak & root detection
- Crashes due to malformed URL Schemes
- Lack of binary protection (anti-debugging) controls, mobile SSL pinning
- Snapshot/Pasteboard leakage
- Runtime hacking exploits (exploits only possible in a jailbroken environment)
- API key leakage used for insensitive activities/actions
Severity
As a general rule of thumb, severity assessments will be based upon their respective CVSS v3 score. Feel free to add your own calculation with the submission so we can see what you think and why you think that.
Exceptional
- RCE (Remote Code Execution)
Critical
- Access to personal data of a large amount of customers (not meaning XSS-ing them all)
- SQL injection
High
- Stored XSS without user interaction
- Access to personal data of one or few customers
Medium
- XSS
- CSRF
Low
- XSS that requires lots of user interaction ( > 3 steps)
- Open redirect
FAQ
Where can we get credentials for the app?
You can self-register on the application but please don’t forget to use your @intigriti.me address.