{"id":"CVE-2019-9764","details":"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.","aliases":["GHSA-q7fx-wm2p-qfj8","GO-2023-1853"],"modified":"2026-07-08T20:03:37.421740Z","published":"2019-03-26T14:29:00.507Z","related":["CGA-4f73-pxch-g7wv"],"references":[{"type":"EVIDENCE","url":"https://github.com/hashicorp/consul/issues/5519"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hashicorp/consul","events":[{"introduced":"567e41ff6b096a478333c804d5c18264050bc3f8"},{"last_affected":"567e41ff6b096a478333c804d5c18264050bc3f8"}],"database_specific":{"cpe":"cpe:2.3:a:hashicorp:consul:1.4.3:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.4.3"},{"last_affected":"1.4.3"}],"source":"CPE_STRING"}}],"versions":["1.4.3","v1.4.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9764.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}