CVE-2026-115804
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may allow an authenticated user to modify health checks belonging to another service on the same node. This vulnerability is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.
Risk Assessment
An authenticated user can modify health checks of other services, potentially causing false alarms or hiding failures. The risk affects monitoring integrity in the Consul cluster.
Recommendation
Update Consul Community Edition to 2.1.0 or Consul Enterprise to 2.1.0/1.21.19. Review user permissions for health check registration.
Other vulnerabilities in HashiCorp Consul
See all- CVE-2026-105765High
HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 are vulnerable to an authorization bypass in the agent's service mesh leaf certificate API that may allow an attacker without a valid ACL token to retrieve a cached service leaf certificate and its private key.
- CVE-2026-105626High
HashiCorp Consul and Consul Enterprise are vulnerable to a denial of service in the HTTP API that may allow an unauthenticated attacker to exhaust memory on a Consul agent.
- CVE-2026-105608High
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.
Original NVD description (English source)
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may allow an authenticated user to modify health checks belonging to another service on the same node. This vulnerability (CVE-2026-115804) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS