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Medium 6.4
Consul vulnerable to an authorization bypass in health check registration
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 f…
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Medium 5.4
Consul vulnerable to an authorization bypass in the catalog deregistration path
Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this i…
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Medium 6.5
Consul vulnerable to a denial of service in the native RPC listener
Consul and Consul Enterprise are vulnerable to a denial of service in the native RPC listener that may allow an authenticated client to exhaust server memory before ACL authorization is evaluated. A client that can complete the internal RPC mTLS handshake may…
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Medium 5.3
Unauthenticated denial of service via unbounded request body processing
Consul Community Edition and Consul Enterprise 1.3.0 through 2.0.2 are vulnerable to an unauthenticated denial of service in several agent HTTP API endpoints. A remote caller could cause the agent to consume substantial memory before the request was rejected.…
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Medium 4.2
L7 intention authorization bypass via custom public listener
Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked b…
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Medium 6.8
Consul vulnerable to partial arbitrary file read via Vault Connect CA provider
Consul Community Edition and Consul Enterprise 1.18.21 through 2.0.2 are vulnerable to a partial arbitrary file read when configured to use the Vault Connect CA provider with JWT or AppRole authentication. A privileged attacker with `operator:write` permissio…
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Medium 5.3
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…
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Medium 4.3
Uncontrolled resource consumption in the Consul Connect authorization endpoint
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 t…
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Medium 5.3
Authenticated denial of service in Consul Enterprise-to-Community Edition downgrade path
Consul Community Edition and Consul Enterprise 1.18.0 through 2.0.2 are vulnerable to an authenticated denial of service in the Enterprise-to-Community Edition downgrade path that may allow an authorized caller to crash the Consul server. A caller with config…
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Medium 4.2
Authorization bypass for session deletion in the transaction API
Consul Community Edition and Consul Enterprise 1.19.1 through 2.0.2 did not enforce the {{session:write}} ACL permission for session deletion operations submitted through the transaction API. An authenticated caller with network access to the Consul server RP…
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Medium 6.8
Consul vulnerable to arbitrary file reads through the vault kubernetes authentication provider
HashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary file read when configured with Kubernetes authentication. This vulnerability, CVE-2026-2808, is fixed in Consul 1.18.21, 1.21.11 and 1.22.5.
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Medium 6.5
Consul's KV endpoint is vulnerable to denial of service
Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS) due to incorrect Content Length header validation. This vulnerability, CVE-2025-11374, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22…
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Medium 6.5
Consul's event endpoint is vulnerable to denial of service
Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise …
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Medium 6.1
Consul Vulnerable To Reflected XSS On Content-Type Error Manipulation
A vulnerability was identified in Consul and Consul Enterprise such that the server response did not explicitly set a Content-Type HTTP header, allowing user-provided inputs to be misinterpreted and lead to reflected XSS.
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Medium 4.9
Consul Cluster Peering can Result in Denial of Service
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…
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Medium 4.9
Consul Server Panic when Ingress and API Gateways Configured with Peering
Consul and Consul Enterprise allowed an authenticated user with service:write permissions to trigger a workflow that causes Consul server and client agents to crash under certain circumstances. This vulnerability was fixed in Consul 1.14.5.
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Medium 5.3
Consul Peering Imported Nodes/Services Leak
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.