CVE-2026-105820: medium-severity vulnerability in HashiCorp Vault Enterprise
Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution
Published
10Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4
exploitation probability
—
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
HashiCorp · Vault EnterpriseRelated CVEs — HashiCorp Vault Enterprise
In the same product, most dangerous first.
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