Collabora Online is a powerful online office suite that supports all major document, spreadsheet and presentation file formats, which you can integrate into your own infrastructure. Key features are collaborative editing and excellent office file format support. Collabora online is deployed in the cloud, or on-premise, and is designed to keep full control of the sensitive corporate data.

Tier 2
€250 - €5,000
Rules of engagement
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.

Vulnerability Severity Time to validate
Exceptional 2 Working days
Critical 3 Working days
High 5 Working days
Medium 15 Working days
Low 15 Working days

This remains at the discretion of Collabora to award.


Tier 2

To perform the testing, you will need to download and set up Collabora Online Development Edition (CODE) locally, together with a file sync & share solution, like Nextcloud or ownCloud.

The scope of testing will be the CODE itself only, not the file sync & share solution or the integration between those. You can install CODE either as Linux packages from here:

or as docker images from here:

If you are interested in the source code of CODE, you can access it here:

Once you have set up the CODE, install the appropriate connector:

For Nextcloud:

For ownCloud:

More information about various details of the installation can be found here:

[Please note: The CODE is branded as "Nextcloud Office" when running under Nextcloud.]

In scope


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!

To perform the testing, Collabora Online Development Edition (CODE) has to be installed by yourself, and connected to an EFSS solution, like Nextcloud or ownCloud. CODE is responsible only for the editing of the documents, not for the file storage or their browsing, and as such, we are interested only in testing of CODE, not of the EFSS or the integration.

Our worst-case scenarios are:

  • Getting access to documents without authentication
  • Possibility to modify the other people's document (for which the rights weren't granted)

Would you like to help us improve our program or have some feedback to share, please send your anonymous feedback here:

Program feedback link
Please note this form will be checked periodically and should not be used for submission or support queries.

Out of scope

Specific out of scope

  • Testing the EFSS that embeds Collabora Online or the integration between EFSS and Collabora Online
  • X-Forwarded-For in combination with the convert-to endpoint of CODE


  • Any domain that is not listed in the Domains section, is out of scope for this program


  • 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


  • 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 contextual CVSS standard


Where can we get credentials for the app?

You are supposed to install Collabor Online Development Edition (CODE) on-premise, to give you the freedom to try to break it in all sorts of creative ways

Do I need to install anything else than just the Collabora Online (CODE)?

Yes, you also need a file sync & share solution, like Nextcloud or ownCloud, and a connector from their marketplace, to enable CODE to edit documents.

What if I get stuck installing Collabora Online Development Edition?

You should try your favorite search engine first :-) But if it fails: - forum full of helpful tips - advanced installation guide - to talk to the developers on IRC

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.

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