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Vulnerability record · CVE-2021-41803 · published 23 September 2022

CVE-2021-41803: Hashicorp consul missing authorization vulnerability

Hashicorp · Consul

HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2."

7.1 CVSS 3.1 High EPSS 1.1% · top 36.5% CWE-862 · Missing authorization
7.1CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2."

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

Affected products

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

References

LinkTags
https://discuss.hashicorp.com/t/hcsec-2022-19-consul-auto-config-jwt-authorization-missing-input-validation/44627 Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQG
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42F
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6
https://www.hashicorp.com/blog/category/consul Vendor Advisory
https://discuss.hashicorp.com/t/hcsec-2022-19-consul-auto-config-jwt-authorization-missing-input-validation/44627 Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQG
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42F
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6
https://www.hashicorp.com/blog/category/consul Vendor Advisory

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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%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%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 3.4%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 0.86%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%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%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%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%

Source: NIST National Vulnerability Database (record CVE-2021-41803), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.