8.8
High
CVE-2026-105608 HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in service mesh proxy registration
Description
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in service mesh proxy registration. This may allow a user with service write permission to apply Envoy escape-hatch configuration without the required mesh write permission. This vulnerability (CVE-2026-105608) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Consul 2.0 | 2.0.4 → < 2.1.0 | 2.1.0 |
| Consul Enterprise 2.0 | 2.0.4 → < 2.1.0 | 2.1.0 |
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