HashiCorp Vault and Vault Enterprise inbound client requests triggering a policy check can lead to an unbounded consumption of memory. A large number of these requests may lead to denial-of-service. Fixed in Vault 1.15.2, 1.14.6, and 1.13.10.
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.