CVE-2021-41805: Hashicorp Consul

High severity, CVSS 8.8. EPSS: 34.8% chance of exploitation in the next 30 days.

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.

Affected products

• Hashicorp Consul: from 1.7.0, before 1.8.17 (fixed in 1.8.17); from 1.9.0, before 1.9.11 (fixed in 1.9.11); from 1.10.0, before 1.10.4 (fixed in 1.10.4)

Published 2021-12-12. Last modified 2026-06-17.