CVE-2026-105820

EUVD-2026-94647

07.10.2026, 22:17

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.

Path Traversal

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
HashiCorp	CNA	5.4 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 14.89%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
hashicorp	vault	0.0.1 ≤ 𝑥 < 2.1.2	CNA

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Vulnerability Media Exposure

[GERMAN] Hashicorp Vault: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Hashicorp Vault ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen oder seine Privilegien zu erweitern.
Published: 2026-10-07T22:00:00+00:00

References

https://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814