Rapid7 InsightVM versions beforeĀ 8.34.0 contain a signature verification issue on theĀ Assertion Consumer Service (ACS) cloud endpoint that could allow an attacker to gain unauthorized access to InsightVM accounts setup via Security Console installations, resulting in full account takeover. The issue occurs due to the application processing these unsigned assertions and issuing session cookies that granted access to the targeted user accounts. This has been fixed in version 8.34.0 of InsightVM.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.