Github.Com Hashicorp Consul vulnerabilities

CVE-2022-29153 [HIGH] CWE-918 Hashicorp Consul HTTP health check endpoints returning an HTTP redirect may be abused as SSRF vector Hashicorp Consul HTTP health check endpoints returning an HTTP redirect may be abused as SSRF vector A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that HTTP health check endpoints returning an HTTP redirect may be abused as a vector for server-side request forgery (SSRF). This vulnerability, CVE-2022-29153, was fixed in Consul 1.9.17

CVE-2020-25864 [MEDIUM] CWE-79 HashiCorp Consul Cross-site Scripting vulnerability HashiCorp Consul Cross-site Scripting vulnerability HashiCorp Consul and Consul Enterprise up to version 1.9.4 key-value (KV) raw mode was vulnerable to cross-site scripting. Fixed in 1.9.5, 1.8.10 and 1.7.14.

CVE-2021-37219 [HIGH] CWE-295 HashiCorp Consul Privilege Escalation Vulnerability HashiCorp Consul Privilege Escalation Vulnerability 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-2019-8336 [HIGH] CWE-284 HashiCorp Consul Access Restriction Bypass HashiCorp Consul Access Restriction Bypass HashiCorp Consul (and Consul Enterprise) 1.4.x before 1.4.3 allows a client to bypass intended access restrictions and obtain the privileges of one other arbitrary token within secondary datacenters, because a token with literally "" as its secret is used in unusual circumstances.

CVE-2023-3518 [HIGH] CWE-266 Consul JWT Auth in L7 Intentions Allow for Mismatched Service Identity and JWT Providers Consul JWT Auth in L7 Intentions Allow for Mismatched Service Identity and JWT Providers A vulnerability was identified in Consul such that using JWT authentication for service mesh incorrectly allows/denies access regardless of service identities. This vulnerability, CVE-2023-3518, affects Consul 1.16.0 and was fixed in 1.16.1.

CVE-2026-2808 [MEDIUM] CWE-59 Consul is vulnerable to arbitrary file read when configured with Kubernetes authentication Consul is vulnerable to arbitrary file read when configured with Kubernetes authentication 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-2021-36213 [HIGH] HashiCorp Consul L7 deny intention results in an allow action HashiCorp Consul L7 deny intention results in an allow action In HashiCorp Consul before 1.10.1 (and Consul Enterprise), xds can generate a situation where a single L7 deny intention (with a default deny policy) results in an allow action.

CVE-2021-32574 [HIGH] CWE-295 Hashicorp Consul Missing SSL Certificate Validation Hashicorp Consul Missing SSL Certificate Validation HashiCorp Consul before 1.10.1 (and Consul Enterprise) has Missing SSL Certificate Validation. xds does not ensure that the Subject Alternative Name of an upstream is validated.

CVE-2019-12291 [HIGH] CWE-284 HashiCorp Consul Incorrect Access Control vulnerability HashiCorp Consul Incorrect Access Control vulnerability HashiCorp Consul 1.4.0 through 1.5.0 has Incorrect Access Control. Keys not matching a specific ACL rule used for prefix matching in a policy can be deleted by a token using that policy even with default deny settings configured. ### Specific Go Packages Affected github.com/hashicorp/consul/acl

CVE-2025-11375 [MEDIUM] CWE-770 Consul event endpoint is vulnerable to denial of service Consul 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 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

CVE-2025-11374 [MEDIUM] CWE-770 Consul key/value endpoint is vulnerable to denial of service Consul key/value 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 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

CVE-2020-13170 [MEDIUM] CWE-20 Improper Input Validation in HashiCorp Consul Improper Input Validation in HashiCorp Consul HashiCorp Consul and Consul Enterprise did not appropriately enforce scope for local tokens issued by a primary data center, where replication to a secondary data center was not enabled. Introduced in 1.4.0, fixed in 1.6.6 and 1.7.4. ### Specific Go Packages Affected github.com/hashicorp/consul/agent

CVE-2022-3920 [HIGH] CWE-862 Missing Authorization in HashiCorp Consul Missing Authorization in HashiCorp Consul 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-2020-13250 [HIGH] CWE-770 Allocation of Resources Without Limits or Throttling in Hashicorp Consul Allocation of Resources Without Limits or Throttling in Hashicorp Consul HashiCorp Consul and Consul Enterprise include an HTTP API (introduced in 1.2.0) and DNS (introduced in 1.4.3) caching feature that was vulnerable to denial of service. ### Specific Go Packages Affected github.com/hashicorp/consul/agent/config ### Fix The vulnerability is fixed in versions 1.6.6 and 1.7.4.

CVE-2020-7219 [HIGH] CWE-400 Denial of Service (DoS) in HashiCorp Consul Denial of Service (DoS) in HashiCorp Consul HashiCorp Consul and Consul Enterprise up to 1.6.2 HTTP/RPC services allowed unbounded resource usage, and were susceptible to unauthenticated denial of service. Fixed in 1.6.3. ### Specific Go Packages Affected github.com/hashicorp/consul/agent/consul

CVE-2020-12758 [MEDIUM] CWE-400 Denial of Service (DoS) in HashiCorp Consul Denial of Service (DoS) in HashiCorp Consul HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4. ### Specific Go Packages Affected github.com/hashicorp/consul/agent/consul/discoverychain

CVE-2022-40716 [MEDIUM] CWE-252 HashiCorp Consul vulnerable to authorization bypass HashiCorp Consul vulnerable to authorization bypass HashiCorp Consul and Consul Enterprise versions prior to 1.11.9, 1.12.5, and 1.13.2 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. A specially crafted CSR sent directly to Consul’s internal server agent RPC endpoint can include multiple SAN URI values with

CVE-2023-2816 [HIGH] CWE-266 Hashicorp Consul allows user with service:write permissions to patch remote proxy instances Hashicorp Consul allows user with service:write permissions to patch remote proxy instances 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

CVE-2020-25201 [HIGH] CWE-400 Denial of service in HashiCorp Consul Denial of service in HashiCorp Consul HashiCorp Consul Enterprise versions 1.7.0 up to 1.7.8 and 1.8.0 up to 1.8.4 includes a namespace replication bug which can be triggered to cause denial of service via infinite Raft writes. Fixed in 1.7.9 and 1.8.5.

CVE-2021-38698 [MEDIUM] CWE-862 HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxies for other services, enabling access to service traffic. HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxies for other services, enabling access to service traffic. HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxies for other services, enabling access to service tr