Hashicorp Consul vulnerabilities

CVE-2026-2808 [MEDIUM] CWE-59 CVE-2026-2808: HashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary 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.

CVE-2025-11374 [MEDIUM] CWE-770 CVE-2025-11374: Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS 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 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

CVE-2025-11375 [MEDIUM] CWE-770 CVE-2025-11375: Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) du 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 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

CVE-2024-10006 [MEDIUM] CWE-644 CVE-2024-10006: A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using Headers in A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using Headers in L7 traffic intentions could bypass HTTP header based access rules.

CVE-2024-10005 [MEDIUM] CWE-22 CVE-2024-10005: A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using URL paths A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using URL paths in L7 traffic intentions could bypass HTTP request path-based access rules.

CVE-2024-10086 [MEDIUM] CWE-79 CVE-2024-10086: A vulnerability was identified in Consul and Consul Enterprise such that the server response did not 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.

CVE-2023-5332 [HIGH] CWE-1395 CVE-2023-5332: Patch in third party library Consul requires 'enable-script-checks' to be set to False. This was req Patch in third party library Consul requires 'enable-script-checks' to be set to False. This was required to enable a patch by the vendor. Without this setting the patch could be bypassed. This only affects GitLab-EE.

CVE-2023-3518 [HIGH] CWE-266 CVE-2023-3518: HashiCorp Consul and Consul Enterprise 1.16.0 when using JWT Auth for service mesh incorrectly allow 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.

CVE-2023-1297 [HIGH] CWE-826 CVE-2023-1297: Consul and Consul Enterprise's cluster peering implementation contained a flaw whereby a peer cluste 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, and 1.15.3

CVE-2023-2816 [MEDIUM] CWE-266 CVE-2023-2816: Consul and Consul Enterprise allowed any user with service:write permissions to use Envoy extensions Consul and Consul Enterprise allowed any user with service:write permissions to use Envoy extensions configured via service-defaults to patch remote proxy instances that target the configured service, regardless of whether the user has permission to modify the service(s) corresponding to those modified proxies.

CVE-2023-0845 [MEDIUM] CWE-476 CVE-2023-0845: Consul and Consul Enterprise allowed an authenticated user with service:write permissions to trigger 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.

CVE-2022-3920 [HIGH] CWE-862 CVE-2022-3920: HashiCorp Consul and Consul Enterprise 1.13.0 up to 1.13.3 do not filter cluster filtering's importe 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.

CVE-2021-41803 [HIGH] CWE-862 CVE-2021-41803: HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2."

CVE-2022-40716 [MEDIUM] CWE-252 CVE-2022-40716: HashiCorp Consul and Consul Enterprise up to 1.11.8, 1.12.4, and 1.13.1 do not check for multiple SA HashiCorp Consul and Consul Enterprise up to 1.11.8, 1.12.4, and 1.13.1 do not check for multiple SAN URI values in a CSR on the internal RPC endpoint, enabling leverage of privileged access to bypass service mesh intentions. Fixed in 1.11.9, 1.12.5, and 1.13.2."

CVE-2022-29153 [HIGH] CWE-918 CVE-2022-29153: HashiCorp Consul and Consul Enterprise up to 1.9.16, 1.10.9, and 1.11.4 may allow server side reques 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.

CVE-2022-24687 [MEDIUM] CVE-2022-24687: HashiCorp Consul and Consul Enterprise 1.9.0 through 1.9.14, 1.10.7, and 1.11.2 clusters with at lea HashiCorp Consul and Consul Enterprise 1.9.0 through 1.9.14, 1.10.7, and 1.11.2 clusters with at least one Ingress Gateway allow a user with service:write to register a specifically-defined service that can cause Consul servers to panic. Fixed in 1.9.15, 1.10.8, and 1.11.3.

CVE-2021-41805 [HIGH] CWE-863 CVE-2021-41805: HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorre HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.

CVE-2021-37219 [HIGH] CWE-295 CVE-2021-37219: HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid c HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.8.15, 1.9.9 and 1.10.2.

CVE-2021-38698 [MEDIUM] CWE-862 CVE-2021-38698: HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxie HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxies for other services, enabling access to service traffic. Fixed in 1.8.15, 1.9.9 and 1.10.2.

CVE-2021-32574 [HIGH] CWE-295 CVE-2021-32574: HashiCorp Consul and Consul Enterprise 1.3.0 through 1.10.0 Envoy proxy TLS configuration does not v HashiCorp Consul and Consul Enterprise 1.3.0 through 1.10.0 Envoy proxy TLS configuration does not validate destination service identity in the encoded subject alternative name. Fixed in 1.8.14, 1.9.8, and 1.10.1.