Vulnerability record · CVE-2021-32574 · published 17 July 2021

CVE-2021-32574: Hashicorp consul improper certificate validation vulnerability

Hashicorp · Consul

HashiCorp Consul and Consul Enterprise 1.3.0 through 1.10.0 Envoy proxy TLS configuration does not validate destination service identity in the encoded subject alternative name. Fixed in 1.8.14, 1.9.8, and 1.10.1.

7.5 CVSS 3.1 High EPSS 1.5% · top 27.5% CWE-295 · Improper certificate validation

7.5CVSS 3.1 base score, v2 5.0

1.5%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Consul Hashicorp

References

Link	Tags
https://discuss.hashicorp.com/t/hcsec-2021-17-consul-s-envoy-tls-configuration-did-not-validate-destination-service-subj	Vendor Advisory
https://github.com/hashicorp/consul/releases/tag/v1.10.1	Third Party Advisory
https://security.gentoo.org/glsa/202208-09	Third Party Advisory
https://www.hashicorp.com/blog/category/consul	Vendor Advisory
https://discuss.hashicorp.com/t/hcsec-2021-17-consul-s-envoy-tls-configuration-did-not-validate-destination-service-subj	Vendor Advisory
https://github.com/hashicorp/consul/releases/tag/v1.10.1	Third Party Advisory
https://security.gentoo.org/glsa/202208-09	Third Party Advisory
https://www.hashicorp.com/blog/category/consul	Vendor Advisory

Track CVE-2021-32574 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2021-41805Hashicorp consul incorrect authorization vulnerabilityHashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default…EPSS 35%12 Dec 2021 8.8CVE-2021-37219Hashicorp consul improper certificate validation vulnerabilityHashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server…EPSS 1.1%7 Sep 2021 8.6CVE-2021-3121Golang protobuf vulnerabilityAn issue was discovered in GoGo Protobuf before 1.3.2. plugin/unmarshal/unmarshal.go lacks certain index validation, aka the "skippy peanut butter" i…EPSS 3.5%11 Jan 2021 8.1CVE-2023-5332Gitlab vulnerabilityPatch in third party library Consul requires 'enable-script-checks' to be set to False. This was required to enable a patch by the vendor. Without th…EPSS 0.74%4 Dec 2023 8.1CVE-2019-8336Hashicorp consul vulnerabilityHashiCorp Consul (and Consul Enterprise) 1.4.x before 1.4.3 allows a client to bypass intended access restrictions and obtain the privileges of one o…EPSS 1.3%5 Mar 2019 7.5CVE-2023-1297Hashicorp consul vulnerabilityConsul and Consul Enterprise's cluster peering implementation contained a flaw whereby a peer cluster with service of the same name as a local servic…EPSS 0.77%2 Jun 2023 7.5CVE-2022-3920Hashicorp consul missing authorization vulnerabilityHashiCorp Consul and Consul Enterprise 1.13.0 up to 1.13.3 do not filter cluster filtering's imported nodes and services for HTTP or RPC endpoints us…EPSS 0.70%16 Nov 2022 7.5CVE-2022-29153Hashicorp consul server-side request forgery (ssrf) vulnerabilityHashiCorp Consul and Consul Enterprise up to 1.9.16, 1.10.9, and 1.11.4 may allow server side request forgery when the Consul client agent follows re…EPSS 8.7%19 Apr 2022

Source: NIST National Vulnerability Database (record CVE-2021-32574), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.