HackerOne · Report #1386277
Attachment references in markdown don't warn before downloading
How it was found
Summary: By default if any link of report is clicked, There will be a popup to user that you're visiting a third-party website please proceed at your own risk etc. However, when a user views the report all links are non clickable and file URI is appended. I have Found out that I can bypass this functionality by appending a " and ) in the end . For example if you view this link as PDF and click the link it will simply redirect you to the URL.
there will be a popup, That you are visited a third party domain etc. Description:
Steps To Reproduce
- create a H1 report with the following payload
- view the report click export and view as pdf
- hover the link and click .
- observe that you are directly redirected without any warning of going to third party domain.
Optional: Your Environment (Browser version, Device, etc)
Optional: Supporting Material/References (Screenshots)
Impact
By using this vulnerability an attacker might be able to get a victims IP address , make them login etc.