Description
A malicious user may submit a specially-crafted complex payload that otherwise meets the default request size limit which results in excessive memory and CPU consumption of Vault. This may lead to a timeout in Vault’s auditing subroutine, potentially resulting in the Vault server to become unresponsive. This vulnerability, CVE-2025-6203, is fixed in Vault Community Edition 1.20.3 and Vault Enterprise 1.20.3, 1.19.9, 1.18.14, and 1.16.25.
Problem types
CWE-770: Allocation of Resources Without Limits or Throttling
Product status
1.15.0 before 1.20.2
Any version before 1.20.2
References
discuss.hashicorp.com/...-though-complex-json-payloads/76393
