FirstBlood-#22OpenRedirect on Secure Logout
This issue was discovered on FirstBlood v1

On 2021-05-09, jonlaing Level 2 reported:

The url is shown on logging out.

This is vulnerable to an OpenRedirect vulnerability.

The original url can be amended to\/// and after following the redirects will take you to Google..

P4 Low

Endpoint: /drpanel/logout.php?ref=/\///

Parameter: ref=

Payload: /\///

FirstBlood ID: 1
Vulnerability Type: Open Redirect

There is an open url redirect vulnerability on /logout.php. The code expects it to start with / and does not allow to redirect to external domains but this can be bypassed.