{"id":"CVE-2026-105820","revision":"d8d27cf4067243188d10756993da8ade","records":[{"revision":"d8d27cf4067243188d10756993da8ade","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-105820","aliases":[],"title":"Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution","description":"Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected.","state":0,"publishedAt":"2026-10-07T21:48:08.017+00:00","modifiedAt":"2026-10-08T17:06:15.663+00:00","affected":[{"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                    \"vendor\": \"HashiCorp\",\n                    \"versions\": [\n                        {\n                            \"changes\": [\n                                {\n                                    \"at\": \"1.21.12\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"1.20.17\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"1.19.23\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"lessThan\": \"2.1.2\",\n                            \"status\": \"affected\",\n                            \"version\": \"0.0.1\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105820","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-105820","identifiers":["CVE-2026-105820"]},"retained":false,"historicalAffected":[]}],"coverage":[]}