{"id":"CVE-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.","modified":"2026-09-12T03:47:21.029883529Z","published":"2026-09-10T18:55:15.413Z","database_specific":{"cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87106.json","cna_assigner":"HashiCorp"},"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":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87106.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87106"},{"type":"PACKAGE","url":"https://github.com/hashicorp/consul"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hashicorp/consul","events":[{"introduced":"4e96098f98228a6b91691abefced6493128d57ea"},{"fixed":"a3eb721c21d4c1ff4baabf84da60158f374f8907"}],"database_specific":{"extracted_events":[{"introduced":"1.21.0"},{"fixed":"2.0.4"}],"source":"AFFECTED_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87106.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}