Rancher Labs Rancher has an unspecified vulnerability

Rancher Labs Rancher is an open source, enterprise-class container management platform from Rancher Labs, Inc. A security vulnerability exists in Rancher Labs Rancher, which stems from a reliance on untrusted input in a security decision vulnerability in Rancher. An attacker could exploit the vulnerability by forging an “Impersonate-User” or “Impersonate-Group” header to act as another user in the cluster.