{"id":"CVE-2025-6203","revision":"53c1fdcaa76244409cced379fe52dc72","records":[{"revision":"53c1fdcaa76244409cced379fe52dc72","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-6203","aliases":[],"title":"Vault unauthenticated denial of service through complex json payload","description":"A malicious user may submit a specially-crafted complex payload that otherwise meets the default request size limit which results in excessive memory and CPU consumption of Vault. This may lead to a timeout in Vault’s auditing subroutine, potentially resulting in the Vault server to become unresponsive. This vulnerability, CVE-2025-6203, is fixed in Vault Community Edition 1.20.3 and Vault Enterprise 1.20.3, 1.19.9, 1.18.14, and 1.16.25.","state":0,"publishedAt":"2025-08-28T19:36:09.87+00:00","modifiedAt":"2025-10-23T18:18:34.361+00:00","affected":[{"ecosystem":"Vendor product","name":"Vault","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"platforms\": [\n                        \"64 bit\",\n                        \"32 bit\",\n                        \"x86\",\n                        \"ARM\",\n                        \"MacOS\",\n                        \"Windows\",\n                        \"Linux\"\n                    ],\n                    \"product\": \"Vault\",\n                    \"repo\": \"https://github.com/hashicorp/vault\",\n                    \"vendor\": \"HashiCorp\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"1.21.0\",\n                            \"status\": \"affected\",\n                            \"version\": \"1.15.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Vault Enterprise","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"platforms\": [\n                        \"64 bit\",\n                        \"32 bit\",\n                        \"x86\",\n                        \"ARM\",\n                        \"MacOS\",\n                        \"Windows\",\n                        \"Linux\"\n                    ],\n                    \"product\": \"Vault Enterprise\",\n                    \"repo\": \"https://github.com/hashicorp/vault\",\n                    \"vendor\": \"HashiCorp\",\n                    \"versions\": [\n                        {\n                            \"changes\": [\n                                {\n                                    \"at\": \"1.20.5\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"1.19.11\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"1.16.27\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"lessThan\": \"1.21.2\",\n                            \"status\": \"affected\",\n                            \"version\": \"1.15.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://discuss.hashicorp.com/t/hcsec-2025-24-vault-denial-of-service-though-complex-json-payloads/76393"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-6203","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-6203","identifiers":["CVE-2025-6203"]},"retained":false,"historicalAffected":[]}],"coverage":[]}