Consul vulnerabilities
10 known vulnerabilities in Consul from HashiCorp. 10 are rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.
Latest first
- 7.5 High severity
Consul: Missing Authorization
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 priv
- 7.5 High severity
Consul: Allocation of Resources Without Limits or Throttling
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. This vulnerability (CVE-2026-105626) is fixed in Consul Community Edition 2.1.0 and Con
- 8.8 High severity
Consul: Improper Handling of Case Sensitivity
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
- 7.1 High severity
Consul: Incorrect Regular Expression
Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not corr
- 8.3 High severity
Consul: Incorrect Authorization
Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog node-write path that may allow an authenticated attacker to delete another node's catalog registration and take over its node identity. An attacker with a token granting node
- 7.5 High severity
Consul: Allocation of Resources Without Limits or Throttling
Consul Community Edition and Consul Enterprise 1.13.0 through 2.0.2 are vulnerable to an unauthenticated denial of service through unbounded connection acceptance on the external gRPC listeners. A remote attacker may exhaust agent file descriptors, goroutines,
- 7.3 High severity
Consul: Incorrect Privilege Assignment
HashiCorp Consul and Consul Enterprise 1.16.0 when using JWT Auth for service mesh incorrectly allows/denies access regardless of service identities. Fixed in 1.16.1.
- 7.5 High severity
Consul: Premature Release of Resource During Expected Lifetime
Consul and Consul Enterprise's cluster peering implementation contained a flaw whereby a peer cluster with service of the same name as a local service could corrupt Consul state, resulting in denial of service. This vulnerability was resolved in Consul 1.14.5,
- 7.5 High severity
Consul: Missing Authorization
HashiCorp Consul and Consul Enterprise 1.13.0 up to 1.13.3 do not filter cluster filtering's imported nodes and services for HTTP or RPC endpoints used by the UI. Fixed in 1.14.0.
- 7.5 High severity
Consul: Server-Side Request Forgery
HashiCorp Consul and Consul Enterprise up to 1.9.16, 1.10.9, and 1.11.4 may allow server side request forgery when the Consul client agent follows redirects returned by HTTP health check endpoints. Fixed in 1.9.17, 1.10.10, and 1.11.5.