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.

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.

"Vault and Vault Enterprise 1.8.0 through 1.8.8, and 1.9.3 allowed the PKI secrets engine under certain configurations to issue wildcard certificates to authorized users for a specified domain, even if the PKI role policy attribute allowsubdomains is set to false. Fixed in Vault Enterprise 1.8.9 and 1.9.4.