Improper access control in Vault Enterprise and Vault - CVE-2026-3605
Published: April 17, 2026
Vulnerability identifier: #VU126407
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-3605
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper access control in the kvv2 metadata and secret deletion handling when accessing a kvv2 path through a policy containing a glob. A remote user can delete secrets they are not authorized to read or write to cause a denial of service.
The issue does not allow deletion across namespaces, and read access to secret data is not possible.
Affected software
Vault Enterprise
Vault
Vault
How to mitigate CVE-2026-3605
Install security update from vendor's website.
Vault Enterprise - addressed in versions 1.19.16, 1.20.10, 1.21.5, 2.0.0
Vault - update to 2.0.0
Vault - update to 2.0.0