CVE-2026-88021

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 correctly escape certain characters in...

PT-2026-89570

Name of the Vulnerable Software and Affected Versions Consul versions prior to 2.0.4 Consul Enterprise versions prior to 1.21.18 Consul Enterprise versions prior to 1.22.12 Consul Enterprise versions prior to 2.0.4 Description An authorization bypass exists in the Connect service mesh. This occur...

Security Bulletin: Uncontrolled resource consumption in the Consul Connect authorization endpoint

Summary Consul Community Edition and Consul Enterprise 1.17.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect authorization endpoint that may allow a caller to grow the agent's intention-match cache without bound, defeating the operator's cache-disable...

CVE-2026-19015 Uncontrolled resource consumption in the Consul Connect CA roots endpoint

Consul Community Edition and Consul Enterprise 1.2.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect CA roots endpoint that may allow a remote caller to grow the agent's Connect CA roots cache without bound, defeating the operator's cache-disable...

EUVD-2026-54607

Consul Community Edition and Consul Enterprise 1.17.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect authorization endpoint that may allow a caller to grow the agent's intention-match cache without bound, defeating the operator's cache-disable...

CVE-2026-19014

CVE-2026-19014 affects Consul Community Edition and Consul Enterprise 1.17.0–2.0.2, where an uncontrolled resource consumption in the Connect authorization endpoint can grow the agent’s intention-match cache beyond bounds, bypassing cache-disable settings. Fixed in Consul 2.0.3 and Consul Enterpr...

CVE-2026-19014

Consul Community Edition and Consul Enterprise 1.17.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect authorization endpoint that may allow a caller to grow the agent's intention-match cache without bound, defeating the operator's cache-disable...

Consul’s Connect Service Mesh Affected By Recent Envoy Security Releases

Summary Consul and Consul Enterprise “Consul” clusters using Consul Connect service mesh should be updated to adopt recent Envoy security releases. Consul’s 1.9 releases support only Envoy 1.16 and older, which are no longer supported and did not receive recent security fixes. Background Consul...