{"id":"BIT-vault-2026-105820","summary":"Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution","details":"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.","aliases":["CVE-2026-105820"],"modified":"2026-10-16T09:45:23.803715183Z","published":"2026-10-16T08:47:46.214Z","database_specific":{"cpes":["cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:go:*:*"],"severity":"Medium"},"references":[{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105820"}],"affected":[{"package":{"name":"vault","ecosystem":"Bitnami","purl":"pkg:bitnami/vault"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.1"},{"fixed":"1.19.23"},{"introduced":"1.20.0"},{"fixed":"1.20.17"},{"introduced":"1.21.0"},{"fixed":"1.21.12"},{"introduced":"2.0.0"},{"fixed":"2.1.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/vault/BIT-vault-2026-105820.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}]}],"schema_version":"1.9.0"}