What’s Vulnerable › Vulnerabilities
CVE-2026-105608: Consul vulnerable to an authorization bypass in service mesh registration
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-26 · updated 2026-10-26
- Weakness: CWE-178
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
- HashiCorp Consul: from 2.0.4 before 2.1.0 — fixed in 2.1.0
- HashiCorp Consul Enterprise: from 2.0.4 before 2.1.0 — fixed in 2.1.0
How to fix
Upgrade to a fixed version: HashiCorp Consul 2.1.0; HashiCorp Consul Enterprise 2.1.0. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-105608 or the next vulnerability affects your stack