CVE-2019-9764: Hashicorp Consul

High severity, CVSS 7.4. EPSS: 0.6% chance of exploitation in the next 30 days.

HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS communication. In other words, the product behaves as if verify_server_hostname were set to false, even when it is actually set to true. This is fixed in 1.4.4.

Affected products

• Hashicorp Consul: version 1.4.3 only

Published 2019-03-26. Last modified 2026-06-17.