CVE-2026-105820
Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution
- State
- Published
- Severity
- 5.4 Medium
- Published
- Oct 7, 2026
- Updated
- Oct 8, 2026
- Reserved
- Oct 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | HashiCorp |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)
Affected Products
| Product | Versions |
|---|---|
Vault EnterpriseHashiCorp |
|
References
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