An issue was discovered in HashiCorp Vault and Vault Enterprise before 1.11.3. A vulnerability in the Identity Engine was found where, in a deployment where an entity has multiple mount accessors with shared alias names, Vault may overwrite metadata to the wrong alias due to an issue with checking the proper alias assigned to an entity. This may allow for unintended access to key/value paths using that metadata in Vault.
HashiCorp Vault Enterprise 1.7.0 through 1.9.7, 1.10.4, and 1.11.0 clusters using Integrated Storage expose an unauthenticated API endpoint that could be abused to override the voter status of a node within a Vault HA cluster, introducing potential for future data loss or catastrophic failure. Fixed in Vault Enterprise 1.9.8, 1.10.5, and 1.11.1.