Vault Enterprise clusters using the tokenization transform feature can expose the tokenization key through the tokenization key configuration endpoint to authorized operators with `read` permissions on this endpoint. Fixed in Vault Enterprise 1.9.4, 1.8.9 and 1.7.10.
In HashiCorp Vault and Vault Enterprise before 1.7.7, 1.8.x before 1.8.6, and 1.9.x before 1.9.1, clusters using the Integrated Storage backend allowed an authenticated user (with write permissions to a kv secrets engine) to cause a panic and denial of service of the storage backend. The earliest affected version is 1.4.0.