{"id":"BIT-consul-2026-87106","summary":"Consul vulnerable to a denial of service in the native RPC listener","details":"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 exploit this issue without holding a valid ACL token. This vulnerability (CVE-2026-87106) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.","aliases":["CVE-2026-87106"],"modified":"2026-09-25T14:15:02.947749614Z","published":"2026-09-25T12:20:50.158Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:hashicorp:consul:*:*:*:*:*:*:*:*","cpe:2.3:a:hashicorp:consul:*:*:*:*:community:*:*:*","cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*","cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*"]},"references":[{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2026-35-consul-vulnerable-to-a-denial-of-service-in-the-native-rpc-listener/77737"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87106"}],"affected":[{"package":{"name":"consul","ecosystem":"Bitnami","purl":"pkg:bitnami/consul"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.21.0"},{"fixed":"2.0.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/consul/BIT-consul-2026-87106.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}