{"cve":"CVE-2019-9764","nvd":{"published":"2019-03-26T14:29:00.507","modified":"2026-06-17T02:44:18.670","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4},"cwes":["CWE-346"],"references":["https://github.com/hashicorp/consul/issues/5519","https://github.com/hashicorp/consul/issues/5519"],"products":["hashicorp:consul"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2019-9764","score":0.0061,"percentile":0.49214,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q7fx-wm2p-qfj8","url":"https://osv.dev/vulnerability/GHSA-q7fx-wm2p-qfj8","summary":"HashiCorp Consul vulnerable to Origin Validation Error","modified":"2026-09-10T03:49:36.486855299Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/consul","purl":"pkg:golang/github.com/hashicorp/consul","ranges":["<1.4.4"],"fixed":["1.4.4"]}]},{"id":"GO-2023-1853","url":"https://osv.dev/vulnerability/GO-2023-1853","summary":"HashiCorp Consul vulnerable to Origin Validation Error in github.com/hashicorp/consul","modified":"2026-02-04T02:41:18.274848Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/consul","purl":"pkg:golang/github.com/hashicorp/consul","ranges":["<1.4.4"],"fixed":["1.4.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}