Due to insufficient input validation of Kyma, authenticated users can pass a Header of their choice and escalate privileges which can completely compromise the cluster.
https://wiki.scn.sap.com/wiki/display/PSR/SAP+Security+Patch+Day+-+December+2021
https://github.com/kyma-project/kyma/security/advisories/GHSA-2vjp-5q24-hqjv