CVE-2026-105608
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductConsul
PublishedOct 26, 2026
First seenOct 26, 2026
Weakness typeCWE-178CWE-178
How to fix
Update
- HashiCorp Consul2.1.0 or later
- HashiCorp Consul Enterprise2.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| HashiCorp Consul | 2.0.4 ≤ v < 2.1.0 | 2.1.0 |
| HashiCorp Consul Enterprise | 2.0.4 ≤ v < 2.1.0 | 2.1.0 |
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