FortiNAC - open redirect in defaultUrl parameter


A URL redirection to untrusted site ('Open Redirect') vulnerability [CWE-601] in FortiNAC may allow an unauthenticated attacker to redirect users to any arbitrary website via a crafted URL.

Affected Products

At least
FortiNAC-F version 7.2.0
FortiNAC version 9.4.0 through 9.4.1
FortiNAC 9.2 all versions
FortiNAC 9.1 all versions
FortiNAC 8.8 all versions
FortiNAC 8.7 all versions


Please upgrade to FortiNAC version 9.4.2 or above
Please upgrade to FortiNAC-F version 7.2.1 or above


Fortinet is pleased to thank KPN for bringing this issue to our attention under responsible disclosure.


2023-04-13: Initial publication