{"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":"2026-03-14T01:43:58.713833Z","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":"0"},{"last_affected":"567e41ff6b096a478333c804d5c18264050bc3f8"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.4.3"}]}}],"versions":["v0.1.0","v0.2.0","v0.2.1","v0.3.0","v0.3.1","v0.4.0","v0.4.1","v0.5.0","v0.5.0rc1","v0.5.1","v0.5.2","v0.6.0","v0.6.0-rc1","v0.6.0-rc2","v0.6.1","v0.6.3","v0.6.4","v0.6.4-rc3","v0.7.0","v0.7.0-rc1","v0.7.0-rc2","v0.7.1","v0.7.2","v0.7.2-rc1","v0.7.3","v0.7.4","v0.8.0","v0.8.0-rc1","v0.8.1","v0.8.2","v0.8.4","v0.8.5","v0.9.0","v0.9.0-rc1","v0.9.1","v0.9.2","v0.9.3","v0.9.3-rc1","v0.9.3-rc2","v1.0.0","v1.0.0-beta1","v1.0.0-beta2","v1.0.1","v1.0.1-rc1","v1.0.2","v1.0.3","v1.0.4","v1.0.5","v1.0.6","v1.0.7","v1.1.0","v1.2.0","v1.2.1","v1.2.2","v1.2.3","v1.4.0","v1.4.0-rc1","v1.4.1","v1.4.2","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"}]}