Security Bulletin: Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution

Summary 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

The Vault ACL policy cache is vulnerable to a path traversal flaw (CWE-22) when policy names contain specific traversal constructs. This allows a token with a specially crafted policy name to bypass namespace boundaries and utilize the capabilities of policies defined in other namespaces, includi...

Vault Enterprise ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution

Summary 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...