CVE-2026-105820
Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | hashicorp |
| Product | vault enterprise |
| Published | Oct 7, 2026 |
Stay Ahead of the Next One
Get instant alerts for hashicorp vault enterprise
Be the first to know when new medium vulnerabilities affecting hashicorp vault enterprise are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
HashiCorp / Vault Enterprise
0.0.1 < 2.1.2
References
Credits
This issue was identified by an external party.