{"id":"CVE-2019-9764","aliases":["EUVD-2022-4910","GHSA-q7fx-wm2p-qfj8","GO-2023-1853","UBUNTU-CVE-2019-9764"],"status":"published","title":"HashiCorp Consul vulnerable to Origin Validation Error","description":"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.","severity":{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0061,"percentile":0.49477,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-346"],"published":"2019-03-26T13:05:51Z","modified":"2026-10-20T10:52:46Z","fixes":[{"ecosystem":"Go","package":"github.com/hashicorp/consul","fixed_in":["1.4.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/hashicorp/consul","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.4"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"consul","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.4~dfsg-3"]}],"products":[{"vendor":"hashicorp","product":"consul"}],"references":[{"url":"https://github.com/hashicorp/consul/issues/5519","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-9764","tags":["advisory"]},{"url":"https://github.com/hashicorp/consul/commit/7e11dd82aa8dae505b7307adcb68c9d3194b3b40","tags":["web","fix"]},{"url":"https://github.com/advisories/GHSA-q7fx-wm2p-qfj8","tags":["advisory"]},{"url":"https://github.com/hashicorp/consul","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2019-9764","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-9764","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-9764","description":"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.","status":"published","published":"2019-03-26T13:05:51Z","modified":"2024-08-04T22:01:54.083Z","updated_at":"2026-11-02T14:20:20.397093Z"}],"euvd":[{"id":"EUVD-2022-4910","description":"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.","status":"published","published":"2019-03-26T13:05:51Z","modified":"2024-08-04T22:01:54Z","updated_at":"2026-11-03T02:40:55.125862Z"}],"ghsa":[{"id":"GHSA-q7fx-wm2p-qfj8","title":"HashiCorp Consul vulnerable to Origin Validation Error","description":"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.","status":"published","published":"2022-05-13T01:23:06Z","modified":"2023-06-09T23:24:00Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:36:53.103029Z"}],"nvd":[{"id":"CVE-2019-9764","description":"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.","status":"published","published":"2019-03-26T14:29:00.507Z","modified":"2026-06-17T02:44:18.67Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:05:09.523883Z"}],"osv":[{"id":"CVE-2019-9764","description":"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.","status":"published","published":"2019-03-26T14:29:00.507Z","modified":"2026-10-20T10:52:46.271425089Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:12.974481Z"},{"id":"GHSA-q7fx-wm2p-qfj8","title":"HashiCorp Consul vulnerable to Origin Validation Error","description":"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.","status":"published","published":"2022-05-13T01:23:06Z","modified":"2026-09-10T03:49:36.486855299Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:46:54.055966Z"},{"id":"UBUNTU-CVE-2019-9764","description":"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.","status":"published","published":"2019-03-26T14:29:00Z","modified":"2025-10-24T04:47:34Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:22.212782Z"},{"id":"GO-2023-1853","title":"HashiCorp Consul vulnerable to Origin Validation Error in github.com/hashicorp/consul","description":"HashiCorp Consul vulnerable to Origin Validation Error in github.com/hashicorp/consul","status":"published","published":"2024-08-20T20:31:32Z","modified":"2026-02-04T02:41:18.274848Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}