Rapid7 Nexpose versions 6.6.186 and below suffer from a forced browsing vulnerability.  This vulnerability allows an attacker to manipulate URLs to forcefully browse to and access administrative pages. This vulnerability is fixed in version 6.6.187.  

Rapid7 Nexpose and InsightVM versions 6.6.82 through 6.6.177 fail to validate the certificate of the update server when downloading updates. This failure could allow an attacker in a privileged position on the network to provide their own HTTPS endpoint, or intercept communications to the legitimate endpoint. The attacker would need some pre-existing access to at least one node on the network path between the Rapid7-controlled update server and the Nexpose/InsightVM application, and the ability to either spoof the update server's FQDN or redirect legitimate traffic to the attacker's server in order to exploit this vulnerability. Note that even in this scenario, an attacker could not normally replace an update package with a malicious package, since the update process validates a separate, code-signing certificate, distinct from the HTTPS certificate used for communication. This issue was resolved on February 1, 2023 in update 6.6.178 of Nexpose and InsightVM.

Rapid7 Nexpose and InsightVM versions prior to 6.6.172 failed to reliably validate the authenticity of update contents. This failure could allow an attacker to provide a malicious update and alter the functionality of Rapid7 Nexpose. The attacker would need some pre-existing mechanism to provide a malicious update, either through a social engineering effort, privileged access to replace downloaded updates in transit, or by performing an Attacker-in-the-Middle attack on the update service itself.

Rapid7 Nexpose versions 6.6.129 and earlier suffer from a reflected cross site scripting vulnerability, within the shared scan configuration component of the tool. With this vulnerability an attacker could pass literal values as the test credentials, providing the opportunity for a potential XSS attack. This issue is fixed in Rapid7 Nexpose version 6.6.130.