In Splunk Enterprise versions below 8.1.13, 8.2.10, and 9.0.4, a cross-site request forgery in the Splunk Secure Gateway (SSG) app in the ‘kvstore_client’ REST endpoint lets a potential attacker update SSG KV store collections using an HTTP GET request.

In Splunk Enterprise versions below 8.1.13, 8.2.10, and 9.0.4, a cross-site request forgery in the Splunk Secure Gateway (SSG) app in the ‘kvstore_client’ REST endpoint lets a potential attacker update SSG [App Key Value Store (KV store)](https://docs.splunk.com/Documentation/Splunk/latest/Admin/AboutKVstore) collections using an HTTP GET request. SSG is a Splunk-built app that comes with Splunk Enterprise. The vulnerability affects instances with SSG and Splunk Web enabled.