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TI-2019-07156 Aliases CVE-2019-9764GHSA-q7fx-wm2p-qfj8

HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS…

Priority LOW 33CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-346.

Summary

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.

Why it matters now

EPSS 0.0061 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed github.com/hashicorp/consul (Go): 1.4.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—github.com/hashicorp/consul (Go)before 1.4.41.4.4Patch availableGHSA-q7fx-wm2p-qfj8
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • github.com/hashicorp/consul (Go) Vendor— Affected before 1.4.4 Fixed in 1.4.4 Patch available GHSA-q7fx-wm2p-qfj8

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hashicorp:consul:1.4.3:*:*:*:*:*:*:*1.4.3VulnerableHashiCorp
  • cpe:2.3:a:hashicorp:consul:1.4.3:*:*:*:*:*:*:* Versions 1.4.3 Vulnerable ·HashiCorp

Remediation

  • Fix · GHSA-q7fx-wm2p-qfj8 github.com/hashicorp/consul (Go) Fixed in 1.4.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-9764
  2. 2026-10-03 Alias added: GHSA-q7fx-wm2p-qfj8

References

Exploit 1

Advisory 1

Other 2

  • TI-2021-18437 HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4… CVSS 3.1HIGH 8.8
  • TI-2022-11698 HashiCorp Consul and Consul Enterprise up to 1.9.16, 1.10.9, and 1.11.4 may allow server… CVSS 3.1HIGH 7.5
  • TI-2021-02215 An issue was discovered in GoGo Protobuf before 1.3.2. CVSS 3.1HIGH 8.6
  • TI-2024-09286 Consul L7 Intentions Vulnerable To Headers Bypass CVSS 3.1HIGH 8.3
  • TI-2023-02638 Consul Envoy Extension Downsteam Proxy Configuration By Upstream Service Owner CVSS 3.1HIGH 8.7
  • TI-2022-03595 Consul Peering Imported Nodes/Services Leak CVSS 3.1HIGH 7.5
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences