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Vulnerability record · CVE-2021-41805 · published 12 December 2021

CVE-2021-41805: Hashicorp consul incorrect authorization vulnerability

Hashicorp · Consul

HashiCorp 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 operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.

8.8 CVSS 3.1 High EPSS 35% · top 1.6% CWE-863 · Incorrect authorization
8.8CVSS 3.1 base score, v2 6.5
35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

HashiCorp 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 operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 Vendor Advisory
https://security.netapp.com/advisory/ntap-20211229-0007/ Third Party Advisory
https://www.hashicorp.com/blog/category/consul ProductVendor Advisory
https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871 Vendor Advisory
https://security.netapp.com/advisory/ntap-20211229-0007/ Third Party Advisory
https://www.hashicorp.com/blog/category/consul ProductVendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2021-41805), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.